WO2014181339A2 - Gas filter and release for ostomy appliance - Google Patents
Gas filter and release for ostomy appliance Download PDFInfo
- Publication number
- WO2014181339A2 WO2014181339A2 PCT/IL2014/050417 IL2014050417W WO2014181339A2 WO 2014181339 A2 WO2014181339 A2 WO 2014181339A2 IL 2014050417 W IL2014050417 W IL 2014050417W WO 2014181339 A2 WO2014181339 A2 WO 2014181339A2
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- WO
- WIPO (PCT)
- Prior art keywords
- filter element
- ostomy appliance
- filter
- lumen
- aperture
- Prior art date
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/4404—Details or parts
- A61F5/4405—Valves or valve arrangements specially adapted therefor ; Fluid inlets or outlets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/4404—Details or parts
- A61F5/4407—Closure means other than valves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/441—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices having venting or deodorant means, e.g. filters ; having antiseptic means, e.g. bacterial barriers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/445—Colostomy, ileostomy or urethrostomy devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/445—Colostomy, ileostomy or urethrostomy devices
- A61F5/448—Means for attaching bag to seal ring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0001—Making filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0038—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions with means for influencing the odor, e.g. deodorizing substances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F2005/4415—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices venting by manual operation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
Definitions
- the present invention in some embodiments thereof, relates to the field of medical care for surgically created openings (stoma) in living subjects, and more particularly, to devices and methods for covering a stoma as may be used in the case of a colostomy, ileostomy or urostomy.
- an end or a side of a healthy portion of intestine is surgically attached to a stoma formed in the abdominal wall. Attachment may be to the visceral side, or a surgeon may pass the intestinal portion through the stoma and attach it to the outside of the abdominal wall. Large or small intestine is attached, depending on the type of ostomy.
- a stoma may be permanently left in a patient when intestinal content can no longer pass out through the anus, due, for example, to colon cancer, diverticulitis, trauma, or inflammatory bowel disease.
- a stoma may be temporary, for example, following an operation on a section of bowel requiring a healing period.
- ostomy appliance Use of an ostomy appliance is indicated for patients with a stoma, to help manage stomal discharge.
- stomal discharge comprises, for example, fecal matter, urine, and/or mucus.
- Appliances may be wholly external, or at least partially internal.
- Common elements of ostomy appliances include a pouch for collecting stomal discharge, and a means to seal the pouch over the stoma. In some cases, a plug or cover is used in addition to, or in place of a pouch.
- Described ostomy appliance designs include the following:
- U.S. Patent Application Publication Number 2007/0191794 relates to "a controlled evacuation ostomy appliance compris[ing] a membrane that is urged into sealing engagement with a stoma, by the generation of radial tension in the membrane.
- a tensioning device applies tension, with respect to the stoma, at one or more positions that are (i) outboard of the periphery of the projecting portion of the stoma, and/or (ii) between the level of the peristomal skin and the level of the most projecting part of the stoma.
- Tension limiting means are disclosed.
- the membrane may be gas-permeable to allow flatus to be vented.”
- U.S. Patent Application Publication Number 2004/0181197 relates to "a flexible membranetinct situated within a rigid or semi-rigid cap.
- the edge of the cap wall is adhesively fixed to the tissue surrounding the stoma.
- the interior of the cap is pressurized to press the membrane to seal the stoma against the discharge of solid and semi-solid waste. Gas escapes through a vent with a filter element.
- the cap can be pressurized by an external pump or an integral pump member situated on top of the cap.
- a relief valve prevents over pressurization.
- a collection pouch can be provided as part of a device.
- the device can be removably mounted on a standard two-piece faceplate.”
- 6,689,111 relates to "a balloon-like membertinct received in the bowel and inflated to seal the stoma.
- the member includes a thin, flexible wall defining an opening.
- a rigid or semi-rigid cap retains the member and closes the opening in the member wall. Skin comfortable adhesive adheres the edge of the cap to the tissue surrounding the stoma.
- a flexible dilation tube facilitates insertion of the member and cooperates with a pump to inflate the member.
- the cap is preferably removably attached to a standard two-piece ostomy faceplate and is provided with a filter element to vent flatus.”
- an ostomy appliance with a gas release valve comprising: an ostomy appliance lumenal sidewall forming part of an enclosure for a stoma and having an aperture passing through the sidewall; a valve member crossing most of the way through the sidewall aperture and including: a stopper positioned to block gas outflow through the aperture, and a control member operable from the exterior of the ostomy appliance to unblock the aperture.
- the valve member comprises a connecting member connecting the stopper to the control member across the aperture.
- the stopper, the control member, and the connecting member are integrally formed.
- the connecting member is elastic, and under tension urges the stopper into the blocking position.
- the lumenal wall is deformed in compression against the stopper in the blocking position.
- the ostomy appliance with a gas release valve comprises a spring in compression urging the stopper into the blocking position.
- the ostomy appliance with a gas release valve comprises a spring in tension urging the stopper into the blocking position.
- the stopper, the control member, and the spring are integrally formed.
- the stopper comprises a filter body providing a portion of a passageway for gas outflow across the lumenal wall, and the blocking position prevents gas outflow passing around the filter body.
- the gas outflow is blocked only below a predetermined threshold of a safe interior pressure.
- an interior pressure of the ostomy appliance presses against the stopper to move it from the blocking position above a predetermined threshold of pressure.
- the predetermined threshold of a safe interior pressure is between 50 mmHg and 100 mmHg.
- the blocking position comprises the stopper being pressed against an interior surface of the lumenal wall. According to some embodiments of the invention, the blocking position comprises the stopper pressed against an exterior surface of the lumenal wall.
- the stopper comprises a member extending mostly through the aperture, and operation to move the stopper out of the blocking position comprises a rotation.
- control member comprises an external lever attached to the elongated member, and the lever is operable to rotate the elongated member so that gas is releasable.
- the stopper comprises a region flaring toward one end of the valve member, and the blocking position comprises the narrow end of the flared region being at least partially inserted to the aperture, forming a seal therewith.
- the stoma is separated from the stopper by a gas-permeable sealing element.
- the being separated comprises blockage of solid and liquid waste from reaching the stopper from the stoma.
- the lumenal wall comprises a thickness of at least 3 mm through which the connecting member extends.
- an ostomy appliance with a filter element comprising: a sidewall defining a first lumen enclosing a stoma; and a filter element held in an at least second lumen; the second lumen being an aperture in the sidewall connecting the first lumen to the ostomy appliance exterior.
- the wall of the second lumen comprises portions of a base element and a cover element; the filter element contacts both the base element and the cover element; and the base element and the cover element are directly attached to each other on either side of the filter element.
- the second lumen comprises a pocket region lined by portions of a base element and a cover element; and the base element and the cover element enclose the filter element within a circumferentially extending pocket closed on at least two circumferential sides.
- an end of the first lumen is closed, and the aperture in the sidewall is flush against an interior surface of the closed end.
- the cover element inserts into a recess of the base element to form the second lumen.
- the filter element is replaceable in the second lumen during operation of the ostomy appliance.
- an input channel in fluid communication with an input surface of the filter element separates the input surface from the first lumen.
- the input channel comprises a membranous material attached over a base element.
- the input channel comprises a recessed surface covered by a closure element to form a lumen.
- the input channel comprises hydrophobic surfaces.
- the hydrophobic surfaces comprise an aperture small enough to exclude water under pressure of its own weight to the depth of the radius of the first lumen.
- the input channel comprises at least one valve between the input surface and the first lumen which closes when a pressure outside the input channel rises relative to a pressure inside the input channel.
- the input channel comprises at least one valve between the input surface and the first lumen which opens when a pressure outside the input channel rises relative to a pressure inside the input channel.
- the valve is a flutter valve.
- the filter element protrudes into the first lumen.
- the filter element comprises an open region through which the sidewall base element and cover element directly connect.
- the whole input surface by which gas enters the filter element from the first lumen is radially offset from the closest part of the exit surface by which gas leaves the filter element to the exterior.
- the second lumen comprises portions of the sidewall molded around the filter element.
- the positioning of the filter element does not prevent the flow of waste through the first lumen.
- the ostomy appliance with a filter element comprises a waste collection pouch, wherein the first lumen is configured to channel waste to enter the waste collection pouch, and the second lumen provides a channel avoiding the pouch.
- the input surface of the filter element on the side of the first lumen extends in one direction at least 5 times the extent of the surface in another direction.
- At least one surface of the filter element is laminated.
- a method for manufacturing an ostomy appliance holding a filter element comprising: placing a filter element against an end portion of a sidewall defining a lumen of a first holding part comprised in the ostomy appliance; placing a second holding part against the filter element and the first holding part; and attaching the first and second holding parts together; such that the filter is held between the first and second holding parts.
- the attaching is by pressing the first and second holding parts with a welding tool.
- the welding tool does not press on at least one of the first and second holding parts over a region of the filter element.
- the welding tool presses with reduced pressure on the first and second holding parts over a region of the filter element. According to some embodiments of the invention, the welding tool does not seal together the first and second holding parts over a region leading to the filter element from the lumen of the first holding part.
- a method for manufacturing an ostomy appliance holding a filter element comprising: placing a second holding part against a sidewall defining a lumen of a first holding part comprised in the ostomy appliance; attaching the first and second holding parts together, leaving therebetween an aperture sized to hold the filter element; and inserting the filter element into the aperture; such that the body of the filter element comprises a principle path of gas conductance through the aperture.
- the attaching is by pressing the first and second holding parts with a welding tool.
- the welding tool does not press on at least one of the first and second holding parts over a region of the aperture.
- the welding tool presses with reduced pressure on the first and second holding parts over a region of the aperture.
- an ostomy cap for sealing a surgical stoma comprising: an ostomy waste collection pouch, collapsed by crimped folding into a package comprising substantially parallel layers of sub-panels, and having a waste inlet into a first sub-panel; and a filter element, sealed across a break in the material of a second sub-panel of the pouch separated from the first sub-panel by a crimped fold, such that it is configured to receive flatus reaching it from the waste inlet pouch, and vent the flatus to the pouch exterior.
- the first and the second sub-panels are separated by a crease located, when the ostomy cap is worn, above the waste inlet, and above the filter element.
- the side of the second sub-panel to which the filter element is attached is overlaid on the outside of the pouch by a substantially parallel surface pressed thereagainst.
- the crimped fold comprises a region which resists the flow of fluid into the second sub-panel.
- the predetermined pressure level is between 1 mmHg and 10 mmHg.
- FIG. 1A schematically illustrates an exploded perspective view of an ostomy appliance comprising an integrated gas filter and filter supporting regions, in accordance with some exemplary embodiments of the invention
- FIG. IB schematically illustrates a sectional view of the ostomy appliance of Figure 1A, in accordance with some exemplary embodiments of the invention
- FIG. 1C shows the gas filter and cap housing of Figure 1A in magnified view, in accordance with some exemplary embodiments of the invention
- FIG. 2 schematically illustrates an exploded perspective view of an ostomy appliance, with integrated gas filter, in accordance with some exemplary embodiments of the invention
- FIG. 3A schematically illustrates a perspective view of an ostomy cap housing together with a filter element, the housing including structures for straining input to the filter, in accordance with some exemplary embodiments of the invention
- FIG. 3B schematically illustrates a perspective view of a portion of the cap of Figure 3A, attached to a membranous material which closes an open face of waste-straining channel and inlet elements, in accordance with some exemplary embodiments of the invention
- FIG. 3C schematically illustrates a perspective view of a portion of the cap of Figure 3A pressed against a face closure structure that closes an open face of waste-straining channel and inlet elements, in accordance with some exemplary embodiments of the invention
- FIG. 4A schematically illustrates an exploded perspective view of an ostomy cap sub-assembly comprising a pouch and cap housing, together with a welding tool portion used in manufacturing the cap sub-assembly, in accordance with some exemplary embodiments of the invention
- FIGs. 4B-4D schematically illustrate operation of a welding tool portion with a recess for assembling a filter to an ostomy housing, in accordance with some exemplary embodiments of the invention
- FIG. 4E schematically illustrates a perspective view of gas escaping from an ostomy cap sub-assembly comprising a pouch bonded to a cap housing and a filter, in accordance with some exemplary embodiments of the invention
- FIGs. 4F-4G schematically illustrate sectional views of an ostomy cap sub-assembly, showing details of the operation of a flutter valve, in accordance with some exemplary embodiments of the invention
- FIGs. 5A-5C schematically illustrate frontal views of filter elements with shapes adapted for different filtering and/or positioning requirements, in accordance with some exemplary embodiments of the invention
- FIG. 6 schematically illustrates an exploded perspective view of a cap sub-assembly of an ostomy appliance comprising a housing adapted to strain gas input to a filter element, in accordance with some exemplary embodiments of the invention
- FIG. 7 schematically illustrates a perspective view of a cap sub-assembly of an ostomy appliance comprising a housing adapted to form a minimum-length pathway of filtered gas flow across a relatively narrow flange, in accordance with some exemplary embodiments of the invention
- FIG. 8 schematically illustrates a perspective view of an ostomy cap housing and a filter element shaped for multiple filtering and/or positioning requirements, in accordance with some exemplary embodiments of the invention
- FIGs. 9A-9B schematically illustrate filter element holding structures with and without a preformed recess, in accordance with some exemplary embodiments of the invention.
- FIG. 10A schematically illustrates an exploded perspective view of a cap sub-assembly comprising a flat filter element and a flat-folded pouch attached alongside each other to a surface of a cap housing, in accordance with some exemplary embodiments of the invention
- FIG. 10B schematically illustrates a perspective view of the sub-assembly of Figure 10A together with a cap cover shaped to receive the pouch and filter element, in accordance with some exemplary embodiments of the invention
- FIG. 11 schematically illustrates a perspective view of a cap housing with a flat filter element adapted to be removably held within a recess of a cap housing, in accordance with some exemplary embodiments of the invention
- FIG. 12A schematically illustrates a perspective view of a cap housing with a flat filter element adapted fit within a recess of cap housing, and secured on at least one side by an insert element, in accordance with some exemplary embodiments of the invention
- FIG. 12B schematically illustrates a perspective view of a cap housing with a flat filter element adapted to be held within an aperture of the cap housing, in accordance with some exemplary embodiments of the invention
- FIG. 12C schematically illustrates a sectional view of an ostomy appliance housing and wafer comprising a flat filter element embedded in the housing by overmolding, in accordance with some exemplary embodiments of the invention
- FIG. 13A schematically illustrates an exploded perspective view of an ostomy appliance stack comprising a gas filter and a manual gas release valve stem, in accordance with some exemplary embodiments of the invention
- FIG. 13B schematically illustrates a sectional view of the ostomy appliance stack of Figure 13 A, in accordance with some exemplary embodiments of the invention
- FIG. 13C shows a magnified perspective view of the manual gas release valve stem of Figure 13 A, in accordance with some exemplary embodiments of the invention.
- FIG. 14A schematically illustrates a perspective view of a gas release valve stem part, in accordance with some exemplary embodiments of the invention.
- FIG. 14B schematically illustrates a perspective view of a gas release valve stem part, in accordance with some exemplary embodiments of the invention.
- FIGs. 15A-15J schematically illustrate configurations of gas release valves, in accordance with some exemplary embodiments of the invention.
- FIGs. 16A-16B schematically illustrate a manual gas release valve, in accordance with some exemplary embodiments of the invention.
- FIGs. 16C-16D schematically illustrate a manual gas release valve, in accordance with some exemplary embodiments of the invention.
- FIG. 17A schematically shows a filter element positioned to vent through the material of an ostomy pouch, according to some exemplary embodiments of the invention
- FIG. 17B schematically shows structural detail of a filter element, according to some exemplary embodiments of the invention.
- FIGs. 17C-17E schematically illustrate positioning of a filter relative to folded structure of an ostomy pouch, according to some exemplary embodiments of the invention.
- FIGs. 18A-18B show different configurations of filters attached to pouch embodiments, according to some exemplary embodiments of the invention.
- FIGs. 18C-18D show filter elements having at least one side protected from waste contamination by a sealing element, according to some exemplary embodiments of the invention.
- FIGs. 19A-19B show cross-sectional views of an ostomy appliance comprising a flap valve, according to some exemplary embodiments of the invention.
- FIGs. 20A-20C show views of an ostomy appliance comprising a valve protected from stoma waste by a secondary sealing member, according to some exemplary embodiments of the invention. DESCRIPTION OF SPECIFIC EMBODIMENTS OF THE INVENTION
- the present invention in some embodiments thereof, relates to the field of medical care for surgically created openings (stoma) in living subjects, and more particularly, to devices and methods for covering a stoma as may be used in the case of a colostomy, ileostomy or urostomy.
- An aspect of some embodiments of the invention relates to the release of stomal gasses through the lumenal sidewall of an ostomy appliance.
- the lumenal sidewall is part of an ostomy appliance which comprises an enclosure for a stoma for controlling the passage of waste therefrom.
- the enclosure in some embodiments, comprises a covering for the outer portions of the stoma.
- the lumenal sidewall comprises a passageway for venting pressurized gasses from the digestive tract. Allowing the release of gasses emitted from a covered surgical stoma reduces the internal pressure held by the ostomy appliance.
- the gas is filtered in the venting passageway, reducing fecal odors the gas may carry. Additionally or alternatively, slowing gas release through a filter potentially reduces odorant concentrations.
- liquid and/or solid waste are potentially held in the stoma and/or the stoma enclosure during a continent phase of ostomy appliance operation.
- liquid and/or solid waste are evacuated to an ostomy pouch during an evacuation phase of ostomy appliance operation.
- to pouch is kept collapsed and closed during the continent phase.
- the pouch is deployed to receive waste.
- a waste-filled pouch continues to be worn until it can be emptied.
- the pouch is not deployed until the ostomate is in a situation which allows the pouch to be immediately emptied and/or replaced.
- the filter element is held within an aperture of a lumenal sidewall of one or more ostomy components.
- the aperture is formed from, for example, an ostomy cap, adaptor, wafer and/or waste collection pouch.
- the aperture walls also guide gas to and/or through the filter element.
- An aspect of some embodiments of the invention relates to the manufacture of an ostomy appliance which releases gas through a lumenal sidewall.
- the filter element extends over only a partial thickness and/or circumference of an ostomy appliance wall. Potentially, this reduces manufacturing costs and/or permits joining of walls to strengthen the appliance.
- An aspect of some embodiments of the invention relates to providing a filter held between a plurality of supporting layers.
- an aperture for holding a filter comprises two ostomy components.
- the two components form a pocket enclosing the filter element on at least two sides.
- the two components are directly bonded to each other.
- the aperture comprises a surface of a membranous structure such as a waste collection pouch film.
- the filter is attached into position— for example, welded or adhered— to form a gas-resistant seal around its sides. Additionally or alternatively, a gas-resistant seal is formed by pressing.
- a filter element is removable and/or replaceable while the ostomy components are in service.
- An aspect of some embodiments of the invention relates to provision of a thin, flat filter element held within the lumenal sidewall.
- the cross section of the filter element through the lumenal sidewall has an aspect ratio (maximum to minimum crossing length) of 5 to 1 or greater.
- the flat filter element is provided with a surface sufficiently flat and extended to receive a laminating membrane which restricts passage of gas therefrom.
- An aspect of some embodiments of the invention relates to preserving adequate gas release and/or filtering capacity in a potentially contaminating environment.
- a strainer separates liquid and/or solids from gaseous stomal discharge before discharge reaches a filter element. Potentially, straining input extends the filter element's useful life, by reducing or preventing blockage of gas-receiving surfaces of the filter by liquids and/or solids.
- a strainer comprises patterned attachment of a surface to another surface. The surfaces are, for example, a waste collection pouch film attached to an ostomy component housing.
- a single solid element is shaped to hold and/or protect a filter; for example by boring, excavating or molding.
- the shaping of the solid element includes structure for input straining.
- a strainer comprises a gas input aperture is sized to exclude solid and/or liquid waste intrusion.
- a plurality of input apertures is provided.
- the aperture is distanced from a filter input surface by a channel.
- the distancing comprises placing the filter element to the outer edge of the pocket which encloses it.
- the channel is completely or partially circumferential.
- the channel provides multiple paths to the filter input surface from one or more strainer input apertures.
- the arrangement of input apertures and/or channels is configured to provide apertures distributed around the circumference.
- the input aperture is narrow, excluding solid waste by size and/or resisting fluid waste intrusion by surface tension.
- strainer surfaces comprise a hydrophobic material. Potentially, hydrophobicity resists the intrusion of fluid waste.
- flexible construction allows external pressure to collapse a gas input aperture, closing it against leakage.
- external pressure on a gas input aperture opens a normally closed aperture.
- the arrangement of input apertures and/or channels is configured with respect to gravity; for example, apertures are placed higher on the ostomy appliance, and/or given additional protection if located lower on the appliance.
- gas-receiving surface area of the filter element is increased by shaping of the filter element edge.
- a filter element is shaped with edge irregularities and/or protruding shapes. Potentially, additional gas-receiving area maintains filter function even if surface contamination occurs.
- An aspect of some embodiments of the invention relates to valve-controllable gas release.
- a valve for gas release comprises a closeable aperture in the housing sidewall or end cap wall of an ostomy appliance housing.
- the valve comprises a member attached to a control such as a lever, handle, or button; the member being configured to enter a gas venting aperture.
- the member positions a sealing element that blocks gas release from the aperture, the block being removable by manipulating the control.
- the penetrating member itself seals the aperture, but is moveable to deform the aperture and allow gasses to escape.
- the valve limits gas release, but allows leakage under at least some pressure conditions, for example as a safety gas release mechanism.
- An aspect of some embodiments of the invention relates to the configuration of a filtering element with an ostomy pouch, such that the filter is operable to release gas while the ostomy pouch is collapsed.
- a filter is placed in a defined region of an ostomy pouch.
- the region is chosen such that it functions when the ostomy pouch is collapsed, for example, folded, more particularly, folded in creased panels, or still more particularly, folded in creased panels comprising a plurality of panels of substantially equivalent in size to the largest panel (for example 80%, 90%, or another fraction of the largest panel size).
- the pouch being folded comprises having a plurality of substantially parallel panels (regions delimited by pouch boundaries and/or fold boundaries) in the package, the number of panels being, for example, 4, 9, 12, 16, 18, 20, 40, or another larger, smaller, or intermediate number of panels.
- the pouch being folded comprises having a plurality of crease regions, through which the orientation of the pouch material bends by about 180°, the number of creases being, for example, 1, 2, 3, 4, 5, 6, or a larger predefined number of folds.
- one or more crease regions comprise a change in the orientation of the pouch material through about 90°, for example, comprising a box-like configuration, an accordion-like configuration wherein a first set of panels lies perpendicular to another set of panels, or another configuration.
- a fold comprises a crimp, such that material of the pouch from opposing plies is pressed together to form a region of sealing.
- a crimp comprises a crease in pouch material of sufficient depth and/or permanence that it remains clear upon unfolding of the pouch.
- a crimped fold line comprises a natural line along which a pouch does and/or would re-fold from an empty deployed position.
- a crimped fold comprises a region which doubles over a ply of pouch material so that it touches itself within a short distance of the crimp, for example, within 0.5-1 mm, 1-2 mm, 2-4 mm, 3-6 mm, or within another range of distances having the same, intermediate, longer, and/or shorter bounds.
- the predefined package is compact, for example, comprising less than 75%, 50%, 25%, or less than a larger, smaller, or intermediate amount of empty space compared to the volume of packaged pouch material.
- compactness comprises being under compression relative to a folded but loosely held state, for example, compacted to 95% or less of the loose volume, 80% or less of the loose volume, or having another larger, smaller or intermediate compaction ratio.
- a pouch package is "compact", in some embodiments, if it lies within a thickness which is not more than 50% greater than the ply thickness alone required, or not more than 25%, 75%, or another greater, lesser, or intermediate package thickness.
- two plies of 60 micron pouch film are used to make a pouch, and the pouch itself is folded in a 3x6 pattern of square panels.
- the overall thickness of the plies alone is thus about 2160 microns (2.16 mm); 150% of this thickness is about 3.24 mm.
- an exemplary package is 2 mm thick, fully compressed, but if released again, it springs to twice this thickness (due, for example, to inherent "springiness" of the material, bulking issues around folds, or another reason).
- a compression ratio of 75% is reached when the package is reduced to a thickness of 3 mm.
- the relative largest single side surface area of the packaged pouch is less than the open (unfolded or unfurled) single side surface area of the pouch, having a relative surface are of, for example, ⁇ 5%, ⁇ 10%, ⁇ 25%, ⁇ 50%, ⁇ 75%, ⁇ 100%, and/or fraction of the unfolded surface area of the pouch which is intermediate, smaller, or larger.
- one or more creases between panels functions to restrict the passage of liquid and/or solid waste.
- the passage is restricted by crimping of a fold across a crease.
- resistance to passage through a fold is maintained by restriction of expansion space by a pouch restraint. It is a potential advantage to restrict the access of solid and/or liquid waste to a filter, to reduce the occurrence and/or rate of filter blockage.
- the filter is overlaid by a membrane that is permeable to gases but impermeable to liquids and solids, potentially reducing production complexity and cost.
- flatus passes the one or more creases to reach the filter.
- the filter is placed within a designated panel of the folded ostomy pouch.
- the designated panel is located in a panel separated by one crease from an intake aperture of the ostomy bag.
- the designated panel is above the intake aperture in the deployed bag.
- the designated panel is folded over the region of the intake aperture, such that waste, in order to reach the filter, must flow upward for at least a portion of its journey, for example, upward to reach a crease, then downward; and/or downward, to reach a crease, and then upward.
- separating a filter from the pouch waste inlet by one, two, or more creases slows the progress of liquid and/or solid waste to reach the filter, relative to the progress of gas.
- relative resistance to liquid as opposed to gaseous flow across a crease comprises straining based on the relative viscosities and/or surface tensions of the two material types.
- the influence gravity reduces liquid flow through a fold region while gaseous flow is relatively unaffected.
- a greater mobility of gas under pressure allows it to reach and fill voids before liquid. Potentially, this reduces the pressure differential driving the movement of material.
- a crease region comprises a narrow channel which resists the flow of liquid along its length more than the flow of gas, for example, due to surface properties of the pouch (such as hydrophobicity) interacting differently with the liquid and the gas.
- the designated panel is chosen to achieve a desired pathway of access of flatus to the filter element from within the folded pouch, for example, across one crease, two creases, three creases, or more.
- the choice of path length is based on a desired relative amount of resistance to flatus passage and/or solid/liquid waste passage.
- the designated panel is chosen based on the position of a venting aperture of the filter within the folded stomal waste pouch package. For example, the venting aperture is placed to be positioned on the outermost surface of the package, with access to the exterior after passing directly to an open side of a fold, and/or with access to the exterior after passing around one or more fold regions of the pouch package.
- a compartment containing the ostomy waste collection pouch comprises one or more vents to the outer atmosphere, preventing occlusion of the filter by a buildup of back-pressure.
- a pouch restraint element (such as a cover for an ostomy cap) comprises one or more apertures, and/or one or more regions where attachment to the ostomy appliance is incomplete, and/or permits the passage of gas.
- the pathway of access of flatus to the filter element is set such that gas flow through the filter is low, for example no more than 1-10 ml/min, 2-5 ml/min, 3-8 ml/min, or another range of flow rates having the same, intermediate, larger and/or smaller bounds.
- a low degassing rate provides a potential advantage by enabling more effective filtering. More effective filtering potentially reduces fecal odors and/or enables using less filter material to achieve a given filtering requirement.
- a filter is placed at a designated position and/or orientation within a panel, for example, at a region of the panel which occupies a higher position when the pouch is in its folded configuration. Positioning at a high point provides a potential advantage for reducing the opportunity for contact with solid and/or liquid waste.
- the filter is placed sufficiently far from creases that it substantially does not interfere with folding: for example, 1-2 mm away, 2-4 mm away, 3-8 mm away, 5-10 mm away, or another distance of separation from a crease.
- the filter is sized to avoid creases; for example, sized to remain 1-2 mm away, 2-4 mm away, 3-8 mm away, 5-10 mm away, or another distance away from all sides of the folded panel near a crease.
- a filter element is placed to cross a crease region.
- filter element bulk at a crease region is reduced, for example, by removal of bulk material at the crease, and/or by a notch and/or cut.
- the filter is sealed on sides most liable to come into contact with waste, for example, on the side facing the direction from which waste reaches the filter, and/or on sides adjoining that face. This is a potential advantage for avoiding contamination of the filter with waste.
- Another potential advantage of side-sealing is to allow an exit aperture of the filter to be nearer to one (sealed) edge of the filter, without shortening the minimum path from the filter inlet surface to the filter outlet. Potentially, this allows a longer path, increasing filtering efficacy. Additionally or alternatively, this potentially allows less filter material to be used. Use of less filter material potentially reduces a materials cost, and/or reduces the bulk of the folded pouch package.
- the overall configuration of the filter, pouch, pouch restraint, and/or other ostomy appliance components is designed to control the rate of filter flow, and/or the pressure at which flow through the filter initiates (effective crack pressure).
- the minimum outflow pressure is set to, for example, 1-10 mmHg. In some embodiments, the minimum outflow pressure is, for example, 1-5 mmHg, 3-7 mmHg, 5-10 mmHg, 8-15 mmHg, 12-20 mmHg, 10-50 mmHg, 45-120 mmHg, or another range of pressures having the same, intermediate, higher, and/or lower bounds.
- the outflow pressure is set, for example, by one or more of the characteristics of the filter itself, the topological position of a sub-panel of the pouch to which the filter attaches (for example, across one or more folds, and the tightness of the folds), the folded position of said sub-panel (for example, at the outside of the folded package, or on the inside), the position on a sub-panel that the filter element occupies (for example, near an edge or buried inside a fold), and/or the susceptibility to leakage of a compartment containing the pouch.
- a low effective crack pressure and/or high rate of flow is a potential advantage, for example, to reduce physiological bloating, and/or improve the durability of the sealing of the ostomy containment system (for example, sealing of a wafer against skin).
- a higher effective crack pressure and/or low rate of flow confers a potential advantage by allowing gas to partially pressurize pouch panel segments past the inlet panel, from where it resists pressurized filling with fluids or solids. Potentially, an effective filter life span is thereby increased.
- a lower rate of flow allows use of a (potentially less expensive) filter which is less efficient at odor collection, while still providing sufficiently effective odor control.
- the rate of flow through the filter is restricted by a component other than the filter itself, for example, a crimped fold of the pouch, a size and/or a shape of an outlet (exhaust) aperture of the filter, and/or a degree of compression (for example, by the pouch restraint) of the collapsed pouch.
- a component other than the filter itself for example, a crimped fold of the pouch, a size and/or a shape of an outlet (exhaust) aperture of the filter, and/or a degree of compression (for example, by the pouch restraint) of the collapsed pouch.
- Effective crack pressure and/or flow rate is regulated, in some embodiments, by (for example) the pattern of folding of a pouch, constraining containment placed on the pouch by a pouch restraint, and/or the design and/or positioning of the filter element itself.
- Figure 2 shows a gas filter 160 in a side wall of an ostomy appliance 200, according to some exemplary embodiments of the invention.
- Supporting region 190 is part of the ostomy wafer housing 123.
- Supporting region 170 is part of an optionally folded ostomy waste collection pouch 150.
- filter 160 and supporting regions 170, 190 are held together to form a filtering vent for gasses from the stoma.
- the gasses are filtered of noxious odors during their passage through filter 160.
- filter body 160 also comprises a barrier to the exit of solid and/or liquid stomal waste.
- a sidewall enclosed filter is potentially an advantage for an ostomy appliance, by allowing the filter body to be enclosed and/or protected by appliance components that participate in other appliance functions such as mechanical support, waste containment, and/or stoma protection. Such a combination purpose potentially reduces a cost of manufacture associated with having a filtering functionality.
- a sidewall position also provides potential advantages by decoupling gas release from solid/liquid waste release. In some embodiments, pathways for evacuating solid/liquid waste or gaseous waste are separately actuatable. In some embodiments, physical separation of these functions allows greater specialization of structure for meeting their different requirements for release timing and control.
- FIGs 1A-1C exemplify an ostomy appliance 100 with separate gas and solid/liquid waste release channels, according to some exemplary embodiments of the invention.
- Ostomy appliance 100 includes a filter element 160 held in a sidewall of an adaptor housing 135 which is detachable from an ostomy wafer 120.
- Figure 1C shows exemplary gas filter 160, filter supporting region 180 of and cap housing 135 of Figure 1A in magnified view.
- Figures 1A-1B illustrate ostomy appliance 100 in overview (exploded perspective and sectional views, respectively).
- the ostomy appliance 100 comprises a stack of ostomy components. Most distal, and worn against the skin of the user (not shown), is ostomy wafer 120. Exemplary ostomy cap 130 is attached to ostomy wafer 120, for example, via flange 125. In some embodiments, a sealing element 115 is compressed between the ostomy cap 130 and the ostomy wafer 120. In some embodiments, cap 130 comprises one or more of a housing 135, cover 140, collapsed stomal discharge collection pouch 150, and/or gas filter 160. Wafer 120, sealing element 115, and cap housing 135 have apertures through which stomal discharge reaches collapsed pouch 150. Pouch 150 is releasable to expand and receive waste for disposal. Other configurations of ostomy stack components are found, for example, in U.S. Patent Application No. 61/645,118 by the Applicant.
- gas flow through filter 160 slows or prevents the build-up of internal pressure to an uncomfortable and/or dangerous level. Pressure buildup is prevented above, for example, 50 mmHg, 80 mmHg, 100 mmHg, 120 mmHg, 150 mmHg, or 200 mmHg. Potentially, lowered internal pressure increases the longevity ostomy appliance sealing, for example, sealing between the ostomy appliance and the skin.
- Some potential advantages of a sidewall mounted filter relate to the restoration of continence functions to an ostomate.
- a collapsed, optionally folded, pouch 150 potentially interferes with gas release through a filter located on cover 140, or integrated into the pouch 150 itself.
- a sidewall position can avoid interference— potentially, the filter is continuously operable to release gas, while pouch deployment can be delayed until there is a need to evacuate waste.
- separation between gasses and solid/liquid waste occurs within the region defined by circumference 136. Separation may thus occur before waste reaches a waste disposal pouch, where gasses escape laterally through an aperture defined in the side wall. Liquids and wastes optionally continue proximally through lumen 138, and eventually into the pouch for disposal.
- a continuously venting filter allows extended periods of wear without a need for pouch deployment to accommodate gas buildup.
- an aspect of fecal continence is restored to an ostomate by restraining collapsed pouch 150 in a continence mode during normal wearing.
- In continence mode solid and liquid waste are contained until pouch deployment for waste evacuation.
- Containment provided by continence mode is potentially complete or nearly complete, so that waste is unnoticeable by others (cryptic) in a social setting.
- Fecal crypsis potentially increases freedom of activity for an ostomate, by reducing the need to hide and/or protect an external waste storage pouch. Fecal crypsis is also potentially aided by filtered gas release that reduces emitted odors. Also contributing to fecal crypsis is avoidance of a pouch potentially accumulating a volume of stagnant flatus. A gas-filled pouch is potentially visible to others and/or uncomfortable to wear— but does not fully deflate when flatus stops, since a filter ceases to be effective as soon as pressure equilibrates. The resulting stored reservoir of gas potentially also increases fecal odor released during evacuation, or if the bag is pressed on during wear. In contrast, a filter used with a collapsed bag potentially operates more effectively to prevent undesirable gas storage.
- Timing evacuation according to need is another aspect of continence restoration.
- it is a potential advantage to not evacuate if pressure creating discomfort and/or an impression of intestinal fullness is primarily due to gas.
- sensing of the difference used to determine a time of evacuation provides more time for liquids in stool to be reabsorbed by the body before stool evacuation.
- Potentially, the number of premature and/or unnecessary evacuations is reduced, reducing the cost of replacing consumable parts of an ostomy appliance.
- Other potential advantages include increased convenience due to a potentially increased duration between evacuations, and/or control of waste evacuation for an ostomate.
- a pouch 150 deploys for filling with liquid and/or solid waste automatically, upon the occurrence of a threshold pressure.
- this threshold is set to provide a safety release.
- cover 140 releases automatically upon a threshold pressure being reached, permitting deployment of pouch 150.
- deployment is manual— for example, by removing cover 140— upon the sensing by an ostomate of a pressure which potentially indicates a need to evacuate.
- Pressure sensing by an ostomate can be a feeling of fullness.
- sensing comprises a pressure indication by the ostomy stack itself; for example: a bulge, a stiffening of a pressurized surface, and/or an alert.
- a safety release pressure it is again a potential advantage to reduce or prevent ballooning pressure due to intestinal gasses.
- a pathway for continuous release of gasses prevents a threshold pressure for automatic deployment from being exceeded by pressure due to gasses.
- continuous release of gasses increases certainty that sensed pressure is (or is not) due to waste requiring pouch evacuation. Potentially, certainty is increased by keeping gas pressure normally low, and/or by providing an indication that gaseous pressure is being controllably released.
- the body 169 of filter 160 is of a known construction; for example: felt, cloth, foam, lattice, or cake.
- the body 169 of gas filter 160 comprises an odor- absorbing material which filters odorants from outflowing gasses. Potentially, filtered odorants are noxious odorants, for example, fecal odors. According to the embodiment, odor absorption is, for example, by the use of activated charcoal, silica gel, zeolites, and/or carbide-derived carbon.
- the filter is preloaded with perfumes and/or odor neutralizing substances, for absorbing gasses passing through the filter to render them less noxious. Potentially, filtering slows the release of gasses so that external concentrations of odorants are less noticeable to the ostomate and/or to others.
- elements of the ostomy appliance hold the filter element and/or protect it from fouling, while serving another functional role.
- Filter holding/protection includes, for example: keeping the filter element in place, sealing to the filter element, and/or straining of input to the filter element.
- Ostomy components adaptable for filter element housing include the pouch, cap, wafer, and/or ostomy appliance adaptor.
- the filter holding aperture comprises at least a base element and a cover element, directly connected to one another.
- gas filter 160 is housed between filter supporting regions 170 and 180.
- the filter element comprises a pathway of communication for gasses to pass between a lumen of the housing and the housing exterior.
- the housing of the filter is such that exiting internal gas is primarily constrained to exit through body 169 of the filter. Flow is resisted outside side surfaces 163, 166, along enclosing surfaces 180, 170, 181, 182, and/or surfaces of the filter body 169 they enclose.
- Figure 3 A also illustrates pairs of housing and filter body surfaces 381, 363 and 382, 364 between which gas flow is resisted. Flow resistance is increased, for example, by sealing pressure, and/or by a sealing coating over surfaces of the filter body 360.
- the base element is a housing 135 of an ostomy component; for example: a cap, adaptor, wafer, sealing element, or disc.
- the housing comprises a rigid or semi-rigid material, for example polyethylene or polypropylene.
- the housing comprises a flexible material, for example polyurethane rubber, silicone rubber, or thermoplastic elastomer (TPE).
- the base and/or cover element is a portion of an ostomy waste collection pouch 150.
- the pouch portion is, for example, a flange comprising a pouch mounting element, or a film comprising the containing portion of a pouch.
- the cover element is a housing of an ostomy appliance component such as a closure, cap, adaptor, wafer, sealing element, or disc.
- the cover element has a lumen and an exterior in common with a lumen and an exterior of the base element.
- the cover element does not have a lumen, and/or does not have a lumen in common with the filter support base element.
- the cover element comprises a membrane.
- the slot for filter 160 is sized to seal by a pressure fit on at least one side of filter 160.
- bonding and/or adhering creates flow resistance between some filter element surfaces 163, 166, 169, and filter support surfaces 170, 180, 181, 182.
- adhesive is applied between the filter element 160 and supporting regions 170, 180 of the aperture.
- the adhesive applies as a liquid, paste, slurry, or polymer clay, to fill gaps between the filter and the aperture. According to the embodiment, adhesive is applied prior to inserting the filter element 160 into the aperture, or afterwards.
- filter body 169 is directly in contact with filter supporting regions 170, 180.
- filter body 169 is laminated on one or more surfaces (for example, surface 163, 166, 363, 364) by a filter sealing layer 168.
- filter sealing layer 168 covers an entire surface of filter body 169. In some embodiments, filter sealing layer 168 covers a partial surface of filter body 169.
- the unconstrained thickness of filter element 160 is, for example, 0.25-0.4 mm, 0.3-0.5 mm, 0.7-1 mm, 1.4-3 mm, 2-4 mm, any thickness in between, or another larger or smaller thickness.
- filter element 160 is compressed to, for example, 30-40% of its unconstrained thickness, 40-60%, 50-80%, 95-100%, or a smaller thickness.
- Filter element 160 in its narrowest (non-thickness) dimension is, for example, 3-4 mm across, 5-8 mm, 8-12 mm, 15-20 mm, larger, or smaller.
- Filter element 160 in its widest dimension is, for example, 3-4 mm across, 5-8 mm, 8-12 mm, 15-20 mm, 20-30 mm, larger, or smaller.
- filter element 160 is substantially flat, for example (but not only), as potentially results from a filter element cut from a sheet of filtering material of an above-described unconstrained thickness.
- the ratio of filter thickness to the other two dimensions of the filter element is, for example, at least 5: 1, at least 10: 1, at least 20: 1, or a greater ratio.
- at least the broadest surface of the filter is sufficiently flat to receive a lamination such as filter sealing layer 168.
- Gas throughput of filter element 160 is, for example, 1-2 ml/min, 2-5 ml/min, 7-13 ml/min, 20-30 ml/min, 40-80 ml/min, 75-125 ml/min, 150-200 ml/min, higher, or lower.
- the throughput values given are under 100 mmHg of differential pressure between input and output surfaces.
- FIGS 3A-3C show examples of strainers protecting against blockage of filter 360, according to some exemplary embodiments of the invention.
- strainers also resist blockage of their own channels that could lead to loss of gas release function.
- a strainer creates a separation between blocking waste and filter input structures. It is a potential advantage to thereby reduce the contact of input surface 361 of filter element 360 with non-gaseous material that could foul it. Fouling comprises, for example, increased resistance, reduced odorant absorption, and/or reduced throughput for the filter.
- Figure 3B shows a straining structure including housing 335 of Figure 3A, and membranous material 348 attached to it, according to some exemplary embodiments of the invention.
- conduit channel 341, inlet 346, and inlet aperture 347 comprise a gas-conductive connection separating input surface 361 and lumen 323.
- inlet 346 and/or conduit channel 341 comprise recesses in housing 335.
- one or more islands 343 help to define channel 341 and/or one or more inlets 346.
- channel 341 is extended by placement of filter 360 toward the outer rim of the ostomy appliance, leaving a channel space more internally.
- membranous material 348 is the material of an ostomy discharge collection pouch, for example, pouch 150.
- FIG. 3C schematically illustrates solid-bodied ostomy stack elements fitted together to form straining structures, according to some exemplary embodiments of the invention.
- Housing 335 closes against closure structure 349, forming channel 341 and inlets 346.
- closure structure 349 is a solid body which attaches, is fitted and/or flexibly seals to housing 335.
- housing 349 is a housing of an ostomy appliance component such as an adaptor, wafer, or sealing element.
- venting stomal gasses are thus guided from inlet aperture 347 through inlet 346 to channel 341, and then to input surface 361. From input surface 361, they are filtered through the body of filter 360, and vented at filter output surface 362.
- a long, narrow gas passageway before input surface 361 provides a potential advantage protecting against fouling by leakage past inlet aperture 347 by increasing a distance of travel.
- Potentially, intruding material is self-restricting due to the small channel size to form a plug preventing deeper contamination of the channel.
- conduit channel 341 extends circumferentially around housing lumen 323. In some embodiments, channel 341 extends around the entire circumference. In some embodiments, channel 341 extends around a portion of the circumference. In some embodiments of the invention, there is a plurality of inlets 346 arranged at intervals (regular or irregular) around the stomal circumference. According to the embodiment, there are, for example, 16, 12, 10, 8, 6, 4, or 2 inlets 346. In some embodiments, there is one inlet 346. Optionally, an inlet is extended sufficiently so that plugging potentially occurs at a restricted extent of the inlet, without blocking it entirely.
- inlet apertures are themselves are configured to resist self-blockage.
- Straining comprises separating gas from solid and/or liquid waste in lumen 323, while directing gas toward filter element 360.
- separation comprises size exclusion, wherein the dimensions of aperture 347 are small enough to exclude solid waste particles above a predetermined size.
- aperture 347 is small enough that internal fluid pressure (for example, due to surface tension) prevents fluid from progressing through the aperture.
- the long dimension of inlet aperture 347 is, for example, 0.08-0.12 mm, 0.2-0.5 mm, 0.8-1.5 mm, 1.4-3 mm, 2.5-7.5 mm, 7-13 mm, a larger or smaller width, or any width in between.
- the depth of the recess forming a portion of aperture 347 is, for example, 5-10 ⁇ , 10-50 ⁇ , 0.05-0.1 mm, 0.2-0.3 mm, 0.4-0.7 mm, 1-2 mm, 2-3 mm, a larger or smaller depth, or any depth in between.
- the surface of the material which forms inlet aperture 347 is hydrophobic. Potentially, this protects the filter element input surface from wetting.
- the surface is treated to increase hydrophobicity.
- the surfaces is coated with a wax or other hydrophobic substance, or treated to roughen the surface structure.
- Inlet aperture 347 hydrophobicity is, for example, equivalent exceeding a contact angle of 91-100°, 95-100°, 100-120°, 110-140°, or a higher contact angle.
- Availability of alternate pathways for gas flow in the event of one or more apertures 347 becoming blocked during use is a potential advantage.
- an ostomate wears housing 335 in a vertical position, with filter element 360 oriented at the top. Waste which reaches lumen 323 is potentially pulled downward by gravity. In this situation, lower apertures 347 potentially are blocked, while higher apertures (those nearer to the filter element) remain open to the passage of gasses.
- an ostomate lies on a side, so input apertures to one side of the filter block before those on the other side.
- input apertures When input apertures are flexible enough to be closed under pressure, they are potentially reversibly closable to the inflow of blocking waste. For example, pressure due to solid and/or liquid waste urging upon an inlet aperture 347 potentially closes the aperture before leakage into it occurs. Unobstructed apertures potentially remain open to gaseous exchange. When waste moves away from a pressure-blocked channel, for example after a change in ostomate position, the channel is potentially restored to function. An increase in gaseous pressure equilibrates on both sides of an aperture more easily, so the channel is potentially not closed thereby.
- a potential advantage of multiple input apertures relates to a corresponding increase in input surface area.
- individual channels can be made small, while increasing the aggregate surface area of all apertures according to the number of channels.
- an ostomate lies on their back, at such an angle so that the housing is substantially horizontal in orientation.
- input apertures are provided in sufficient number to overcome a predetermined average level of blockage. For example, ten apertures are provided where one is sufficient, so that 90% average blockage of all apertures still provides sufficient gas release.
- membranous material 348 is attached by welding and/or bonding to the surface of housing 335. Attachment is, for example, by adhesive, chemical treatment, and/or heat treatment. In some embodiments, the membranous material 348 is attached to one or more inlet- and conduit-channel wall structures 343. In some embodiments, the membranous material is attached to flange 367. In some embodiments, the membranous material prevents entry to the lumens of the input strainer from lumen 323 except at input aperture 347. Input aperture 347 is formed between the roof of membrane 348, and the floor and walls of the recess of inlet 346.
- membranous material 348 is a film known in the art for producing ostomy pouches.
- the film is made from a single material, for example polyethylene, ethylene vinyl acetate, polyamide or cellulose.
- the film is made from a plurality of materials, for example by a co-extrusion process combining two or more of the aforementioned film materials.
- membranous material is a foil, for example, aluminum.
- membranous material 348 is a porous structure such as a fabric or felt, sealed, for example, with a plastic coating.
- membranous material 348 is a layer of flexible material, for example silicone, polyester or polyethylene terephthalate.
- the material is applied in wet form by techniques including spraying or brushing, and then dried.
- the thickness of membranous material 348 is, for example, 0.01-0.025 mm, 0.045-0.055 mm, 0.09-0.11 mm, 0.18-0.22 mm, 0.25-0.35 mm, any thickness in between, or a greater or lesser thickness.
- the lumen 323 diameter of housing 335 is 12-17 mm, 15-25 mm, 25-35 mm, 32-45 mm, 40-55 mm, larger, or smaller.
- the distance between the inner and outer diameters of flange 367 is, for example, 1-3 mm, 3-7 mm, 6-15 mm, 14-28 mm, more, or less.
- the overall length of lumen 323 is 0.8-1 mm, 1-2 mm, 2-7 mm, 5-15 mm, 15-25 mm, longer, or shorter.
- Cap sub-assembly 400 comprises a pouch film 450 and cap housing 435. These are shown with a portion of welding tool 410 used in manufacturing cap sub-assembly 400.
- supporting structures for filter 460 are constructed by selective bonding of surfaces.
- one or more lumens are formed, for example, by selectively bonding adjoining surfaces on two or more sides of an unbonded region.
- Figure 4A shows pouch film 450 positioned over ostomy component housing 435.
- film 450 and housing 435 are bonded, forming a pocket 480 for holding filter element 460.
- bonding is performed with the use of welding tool portion 410.
- Welding tool portion 410 fits a press (not shown), and applies heat, pressure, radio frequency (RF) radiation and/or mechanical vibration to fuse ostomy component parts.
- RF radio frequency
- welding tool 410 comprises a ring with a gap 415. Bonding during manufacturing comprises pressing tool 410 against pouch film 450 and housing 435. However, bonding does not occur in the region 480 underneath gap 415 where pressing does not occur. In some embodiments of the invention, this produces a pocket region at 480 between pouch film 450 and ostomy component housing 435. In some embodiments, the pocket region holds a filter element 460 in place. In some embodiments, a portion of the pocket region acts as an input straining structure.
- Tool portion 410 which has a recess 416 in place of gap 415.
- Tool portion 410 is inverted in Figure 4B compared to Figure 4A.
- recess 416 reduces or removes the pressure tool portion 410 exerts under the recess.
- the tool portion 410 is in position over film 450, filter element 460 and housing 435 in preparation for welding.
- the tool portion is pressed down over these elements to perform welding assembly.
- recess 416 is sized to substantially accommodate filter element 460 while compressing it by a distance 462.
- Distance 462 is, for example, 5%-20%, or 15%-30% of the uncompressed filter size.
- the partial compression exerts sufficient pressure to seal film 450 to filter element 460.
- the compression of filter body 460 during manufacture enhances sealing along the sides of the filter element, due to restorative forces.
- filter 460 is placed either before or after bonding.
- filter 460 is placed within region 480 before bonding forms the pocket that holds it.
- filter 460 is inserted into this pocket region after it is created. It may, for example, be compressed by an insertion tool, inserted, and the insertion tool removed.
- filter 460 is held within a pocket region at 480 by pressing contact with pouch film 450 and/or ostomy component 435.
- the pocket region at 480 holds filter element 460 so that it is in the path of least resistance for venting gasses.
- the volume of pocket 480 comprises a depression in component housing 435, for example, as in supporting region 180 of Figure 1C.
- a potential advantage of holding filter 460 in place by compression and/or friction, rather than direct bonding, is that filter 460 is removable and/or replaceable without rendering the ostomy components that hold it inoperable.
- a potential advantage of a removable filter element is to allow filter replacement.
- an external aperture of pocket region 480 is wider than the filter (easing filter entry), narrowing internally to seal against the filter body. Potentially, filter replacement allows longer use of an ostomy appliance after fouling of a first filter element preventing effective gas release and/or filtering. Additionally or alternatively, a user may decide to permanently or temporarily remove or break the sealing around a blocked filter to restore passive gas release.
- filter 460 Another potential advantage of compression holding for filter 460 is removing some bonding operations needed to produce the pouch, filter, and housing sub-assembly.
- the body material of filter element 460 is not bonded to a backing layer, otherwise used to contain gasses passing through the filter body. Potentially, a simpler filter element 460 reduces manufacturing cost.
- the shape of a lumen constructed by selective surface bonding is not limited to a single, to a straight, or to an unbranched lumen.
- the channeled structures of Figures 3A-3C are constructible without a recess in housing 335 by selectively bonding membranous material 348 to define gas passageways.
- this selective bonding is controlled by suitably arranging recesses and/or gaps in a bonding tool part such as 410.
- Cap sub-assembly 400 comprises pouch film 450 bonded to a cap housing 435 at region 451, and a filter 460.
- Sub -assembly 400 is manufactured, for example, as described in relation to Figure 4A.
- region 474 comprises a pressure-activated valve formed by an arrangement of pouch film 450 selectively bonded to housing 435.
- the flutter valve comprises a portion of pouch 450 and the cap housing 435 at a region 474 near the input surface of filter 460. Potentially, the flutter valve helps to prevent or reduce fouling of the input surface of filter element 460.
- filter element 460 does not extend completely across the rim of the housing 435 at region 480.
- an input strainer is formed in a region 474 where the material of pouch 450 and of housing 435 are not bonded.
- a potential advantage of this flutter valve mechanism is to isolate filter element 460 from possible contamination by waste, except for periods when there is an immediate presence of stomal gasses to release.
- solid and/or liquid waste reaches the predetermined pressure required to open aperture 478, there is a likely need to evacuate in any case— since pressure that cannot be vented represents the presence of a significant quantity of waste.
- the filter is disposed of after an evacuation event, so that a brief period of gas release impairment is acceptable.
- a flutter valve is positioned to distinguish between pressure from gasses, or from liquid/solid waste; for example as follows.
- a flutter valve which opens and closes according to surrounding pressure is built into an input strainer such as that of Figures 3A-C.
- a flutter valve is normally open, and closes under external pressure. With elevated gas pressure within the stomal appliance, the valves remain open, as pressure rapidly equilibrates on both sides of the flutter valve. However, in the presence of elevated pressure due to liquid or solid, input straining slows or prevents pressure equilibration.
- FIG. 5A-5C show filters 561, 562, 563 shaped for different filtering requirements, according to some exemplary embodiments of the invention.
- the shape of a filter element is chosen to increase the absorption area of a filter element. Additionally or alternatively, the shape is chosen to make room for additional surface attachments so that the strength of the lumenal wall is not compromised.
- Figure 5A illustrates an exemplary filter element 561 placed on or within a recess or pocket region of exemplary ostomy component housing 536.
- the filtering length stretches between input surface 561A, in contact with the lumen 523 of the housing 536, and the output surface 561B.
- filter element 561 is restricted to occupy only a portion of the ostomy component wall circumference.
- the circumference portion is, for example, 90°, 60°, 45°, 20°, 10°, any portion in between, or a larger or smaller portion of the wall circumference.
- a potential advantage of occupying a restricted portion of the wall circumference is that the remainder of the wall is available, for example, for connecting to the surface of another ostomy component, such as a waste collection pouch. As more surface area is available for connection, the strength of the overall ostomy appliance is potentially increased.
- Another potential advantage of occupying a restricted portion of the wall circumference is correspondingly reduced filter material use.
- a non-annular filter shape also allows use of a more efficient filter shape when cutting from a sheet of filter material, reducing wastage.
- Figure 5B illustrates an exemplary filter element 562 placed on or within a recess or pocket region of exemplary ostomy component housing 537.
- filter material is cut from a region 531 within the arc occupied by filter element 562 in the housing wall.
- region 531 is available for attachment, for example, to an ostomy waste collection pouch.
- Region 531 is, for example, on the outer wall of housing 537, on the inner wall, or enclosed within the outlines of an aperture of filter 562.
- Region 531 is of any shape; for example: rounded, square, rectangular or triangular.
- housing 537 comprises a recess complementary in shape to filter element 562, within which filter element 562 fits.
- housing 537 is flat, and attachment, for example, to a pouch, comprises pressing the membrane past the filter so that it contacts region 531.
- a potential advantage of filter material-free regions within the body of the filter is additional points of attachment between housing 537 and another ostomy component such as a pouch to which it attaches. Potentially, additional points of attachment allow the circumferential extent of filter element 662 to be increased without compromising strength.
- Figure 5C illustrates an exemplary filter element 563 placed on or within a recess or pocket region of exemplary ostomy component housing 538.
- filter element 563 has a portion 533 which extends into the lumen of housing 538.
- the extended portion 533 is shaped to increase an available edge surface area.
- the surface area exposed by the extended portion is increased by lengthening its contour; for example, by making the contour wavy or jagged.
- the surface area is increased by making slits in the body of the filter. Potentially, narrow slits serve a straining function resisting the intrusion of solid or liquid waste.
- extended portion 533 is left uncoated on its faces so that the body of the filter is exposed.
- a potential advantage of increased exposed surface area of filter 563 is to mitigate the effects of filter input surface fouling.
- a tenfold increase in surface area for example, potentially mitigates a tenfold reduction in gas absorption due to fouling.
- Filter element 563 extends into the lumen of housing 538, for example, by 1-3 mm, 2-5 mm, 3-8 mm, 7-13 mm, any length in between, more, or less.
- the exposed input surface area of filter element 563 is larger than the surface area which would be exposed if the extension was removed.
- the relative difference is 20-50%, 50-150%, 100-300%, 300-1000%, or a larger or smaller percentage.
- Housing 635 is adapted to strain gas input to a filter element 660.
- Input surface 661 of filter element 660 is furthermore shaped to increase the area potentially available for gas absorption into the filter body.
- FIG. 6 an exemplary input strainer is shown (for clarity, it is illustrated without overlying membrane or other channel closure).
- the strainer comprises gas input 646, input channel 641, and channel walls 643 surrounding the lumen 623 of ostomy component housing 635.
- Filter element 660 is shown with at least two types of filter input surface regions.
- Surface region 663 is the "clean" input region, protected by the input strainer.
- Surface region 661 is unprotected, and extends into lumen 623. There, although it is exposed to fouling by waste, increased surface area potentially allows accepting gas fast enough to prevent pressure buildup.
- a potential advantage of combining both filter protection types in one device is that each serves as a backup for the other. Potentially, each protection type is relatively more robust in different circumstances, for example due to orientation or waste consistency.
- FIG. 7 showing housing 735 shaped to lengthen the venting path through filter element 760, according to some exemplary embodiments of the invention.
- the minimum filtering pathway through filter element 760 is longer than the shortest distance across the filter.
- a lengthened venting path potentially allows greater reduction in odor by filtering, and/or reduces the chance of leakage making its way all the way across the filter element.
- the input surface 761 of filter element 760 is circumferentially offset from output surface 762. The offset, formed by the surrounding walls, forces gasses escaping lumen 723 to the exterior to route circumferentially as well as radially.
- a housing 735 comprises a recess 780 fitted to the shape of filter element 760.
- recess 780 has an open section 781 near lumen 723 which defines the input surface 761 of filter element 760 when it is inserted.
- recess 780 has an outer open section 782 which defines the output surface 762 of filter element 760.
- an additional or alternative enclosure defines a filter input surface 761 and/or an output surface 762.
- an embodiment such as that of Figure 9B hereinbelow is adapted so that the pattern of attachment of a pouch film defines offset input and output surfaces.
- a potential advantage of using a circumferential offset to define a minimum gas filtering path length is that the width of flange 725 can be made narrower than the desired filtering path length. Additionally or alternatively, filter element 760 can be made narrow relative to the flange 725, so that there is room for a deeper input protecting region 746 to be defined.
- input region 746 comprises an input straining aperture and/or a flutter valve.
- Figure 8 shows a filter element 860 shaped to combine design elements previously described, according to some exemplary embodiments of the invention.
- filter element 860 comprises a plurality of input surfaces 861. In some embodiments, filter element 860 comprises a plurality of output surfaces 862. In some embodiments, input and/or output surfaces 861, 862 are defined by openings 881, 882 in depression 880 in housing 835.
- filter element 861 comprises a notched region 865 with a shape complementary to the shape of an attachment region 885 of housing 835.
- filter element 860 fits within a substantially rectangular profile, modified as necessary to fit the shape of recess 880 in housing 835.
- a potential advantage of a rectangular profile for a filter element is that it can be manufactured from a sheet of filter material with low wastage in the spacing between individual elements cut from the material.
- exemplary filter element 860 combines considerations for filter design previously described.
- a circumferential offset between input and output surfaces increases filter pathway length.
- An open central region permits attachment of two holding surfaces.
- an efficient shape reduces wastage of filter material.
- recess 880 is only one example of a way to constrain the flow of gasses through filter element 860. Selective bonding by adhesion and/or welding, for example to the membrane of a waste collection pouch, is another way to house filter element 860.
- FIGS 9A-9B show alternative examples of pockets for holding a filter element 960, according to some exemplary embodiments of the invention.
- the pockets comprise the membranous material of a waste collection pouch 950, and an ostomy component housing 935A, 935B.
- a solid-bodied housing may fully or partially accommodate a filter in a recess. Additionally or alternatively, a membrane may bulge over part or all of a filter to accommodate it.
- ostomy component housing 935A has a recess 980A fitted to the size of filter element 960.
- ostomy pouch 950A is attached to housing 935A, for example by adhesion or welding.
- a holding region for filter element 960 is thereby created between recess 980A and a region 970A of pouch 950A.
- ostomy component housing 935B is flat. In some of these embodiments, a region 970B of pouch 950B bulges over filter element 960, pressing it to housing 935B.
- filter element 960 is thicker than recess 980A, while region 970B of ostomy pouch 950B bulges over it.
- filter element 960 is placed between two holding surface regions during or before joining of the surfaces.
- filter element 960 is inserted between region 970A or 970B and 980A or 980B after attachment of pouch 950A, 950B and housing 935A, 935B.
- FIG. 10A-10B showing a filter element 1060 and folded pouch 1050 attached beside each other to a housing 1035, according to some exemplary embodiments of the invention. Potentially, this configuration provides some protection against contamination to filter input surface 1061 in a low combined pouch/filter profile.
- an input surface 1061 of filter element 1060 is positioned over a lumen 1023 of a housing 1035. The illustrated position allows access by interior stomal gasses.
- an output surface 1062 is open to the exterior of the ostomy appliance.
- a portion of a folded ostomy pouch 1050 lies next to the filter element 1060 on a surface of the housing 1035. Potentially, this protects input surface 1061 from fouling.
- one or more faces 1065 of the filter element are sealed against gas exit, for example, by a portion of pouch 1050.
- a potential advantage of assembling filter element 1060 and pouch 1050 side-by-side on a surface of housing 1035 is a reduction in overall ostomy component height.
- cover 1040 overlays housing 1035, pouch 1050, and filter element 1060 during normal wear.
- a recess 1042 of cover 1040 fittingly encloses pouch 1050 and filter 1060.
- cover 1040 presents a flat outer surface appearance as a result of the fitting enclosure by recess 1042.
- cover 1040 is removed to allow deployment of pouch 1050.
- cover 1040 is fully detachable from the ostomy appliance.
- cover 1040 has ventilation holes 1044, which allow gas filtered through filter element 1060 to exit the apparatus.
- cover 1040 bulges outward when there is an internal pressure exerted through lumen 1023. Venting gas potentially allows distinguishing a pressure bulge due to gas, which can be vented, from a bulge due to waste needing evacuation for disposal.
- a flat-folded bag is used along with a filter in another configuration. It is, for example, folded in front of the filter (proximally), as in exemplary embodiments of Figures 1A-1B, 2, and/or 13A-13B.
- Figure 11 illustrates a removable filter element 1160 of ostomy sub-assembly 1100, according to some exemplary embodiments of the invention.
- the open face of housing 1135 and/or of recess 1180 is covered over by another component (not shown for clarity).
- the additional component is, for example, another ostomy component housing, or a portion of an ostomy pouch.
- filter element 1160 is insertable and/or removable by the ostomate during operation (wearing) of the ostomy appliance.
- a grip 1167 allows filter element 1160 to be manipulated for insertion and/or removal from a holding region 1180.
- grip 1167 is a relatively inflexible tab, for example of stiff plastic, so that the filter can be inserted without collapsing.
- a stiff backing extends over a larger surface region of filter element 1160, or a whole surface.
- insertion is by pressing filter element 1160 into an aperture without a protruding tab.
- filter element 1160 is retrievable by pulling on a protruding element other than a tab, such as a string.
- holding region 1180 comprises one or more snaps 1183 adapted to fit into hollows 1165 on filter element 1160.
- inserting filter 1160 into holding region 1180 briefly deflects flexible and elastic snaps 1183. Snaps 1183 snap back into hollows 1165 when filter element insertion is completed.
- portions of filter 1160 deflect and/or compress during insertion, and return to place after passing snaps 1180.
- a potential advantage of a removable filter element 1160 is that a filter element which has become fouled during use can be removed, and a new filter element put in its place.
- removable filter element 1160 is temporarily removable or loosenable to release overpressure, for example, due to a sudden gas bolus, and then returnable to position.
- removable filter element 1160 is reused in a new cap sub-assembly 1100 after a used cap sub-assembly 1100 has been disposed of.
- FIG. 12 A showing flat filter element 1260 removably held within a recess 1280, according to some exemplary embodiments of the invention.
- Filter element 1260 is secured on at least one side by an insert element 1270.
- filter element 1260 of sub-assembly 1200A is held within a recess 1280 of cap housing 1235A by a retaining insert element 1270.
- insert element 1270 is in turn held in position by, for example, hollows 1271 which are occupied by retaining flanges 1284.
- a portion of cap housing 1235A separates between recess 1280 and a face of cap housing 1235A weldable to a collection pouch.
- a distance of said separation is, for example, 0.3-0.6 mm, 0.4-0.7 mm, 1-2 mm, 2-4 mm, 3-7 mm, any distance in between, or a larger or smaller distance.
- a potential advantage of a firm-sided filter holder is firmer holding of the filter element in place.
- a potential advantage of a filter element positioned not between a cap housing and a portion of a collection pouch is that a fully annular welding tool can be used in attaching the pouch portion to the cap housing.
- a potential advantage of a recess separated from a face intended for welding is reduced risk of damage to the filter element caused by heat produced during welding.
- Cap sub-assembly 1200B of an ostomy appliance comprises a flat filter element 1260 adapted to be removably held within an aperture 1275 of cap housing 1235B.
- filter element 1260 is held within an aperture 1275 of a cap housing 1235B.
- the firm sides of the holder for the filter element are potentially well-suited to the use of a replaceable filter.
- the one-piece construction of the filter holder is potentially of particular durability.
- One-piece construction of the filter holder is potentially cheaper for production, as fewer components are produced and less assembly is required.
- FIG. 12C illustrates a filter embedded in a housing 1235C by overmolding, according to some exemplary embodiments of the invention.
- filter element 1260C is embedded within a cap or adaptor housing 1235C by an overmolding technique. In some embodiments, filter element 1260C is placed in the mold used for the manufacture of housing 1235C, and the material of the housing is molded around it.
- this construction provides an advantage for manufacture by removing an assembly step of manufacture.
- the molded fit between filter and housing allows more reliable resistance to the outflow of gasses around the filter body edges.
- inner ring 1237 (or another secondary sealing element) presses against a floor 1212 of wafer 1210 when housing 1235C is assembled to the wafer 1210.
- the contact is sufficient to resist the passage of liquid and/or solid waste, but loose enough to permit the passage of gas.
- an aperture for gas passage is provided. Gas reaching secondary lumen 1238 can thus exit through a protected input surface of filter 1260C.
- molded incorporation allows a filter body shape which does not need a width profile suitable to be pushed through an enclosing aperture.
- the filter 1260C is bent, either during molding, or by manufacturing steps to change the filter shape (for example, heat forming) before overmolding.
- a non-planar configuration increases the filtering length of the filter.
- a non-planar configuration allows the filter to be shaped to avoid other structures of the ostomy appliance, such as attachment fitting 1239.
- Figure 13A shows an ostomy appliance stack 1300 comprising a transmural gas release valve stem 1395, according to some exemplary embodiments of the invention.
- Figure 13B illustrates a sectional view of the ostomy appliance stack 1300 of Figure 13A, according to some exemplary embodiments of the invention.
- Figure 13C shows a magnified perspective view of the manual gas release valve stem 1395 of Figure 13A, according to some exemplary embodiments of the invention.
- a transmural valve potentially provides a manually actuatable alternative and/or adjunct to filtered gas release. For example, in the case of a sudden gas bolus, the valve can be activated to reduce gas pressure faster than the filter element alone.
- a transmural valve potentially provides potential means for testing whether a felt pressure is due to solid/liquid waste, or to gas, by brief opening to determine if gas is released.
- a transmural valve comprises a safety release mechanism for gaseous overpressure.
- loss of gas release function due to a blocked filter can be worked around by activation of the valve.
- ostomy appliance 1300 comprises an actuatable valve for manual gas release.
- the manually actuatable valve comprises a shell 1345, a stem part 1395, and/or a secondary sealing element 1315.
- a filter element 1360 for passive gas release is provided along with the manually actuatable valve.
- shell 1345 comprises a stem-receiving hole 1396 and a stem part holding region 1397.
- sealing element 1315 comprises a stem receiving hole 1398 and a stem part holding region 1399.
- stem part 1395 assembles to the ostomy appliance with a rigid stem 1394 of the stem part 1395 inserted through hole 1396.
- stem 1394 inserts through hole 1398.
- stem end 1393 comprises an expanded region for pressing an inner aperture of hole 1398 to seal it.
- the expanded region of stem end 1393 inserts partially or completely into hole 1398.
- stem end 1393 is tapered (for example, conically), with the narrow end oriented toward the hole 1398.
- hole 1398 is tapered to receive part or all of stem end 1393.
- the main body of stem 1394 is a tether, for example a string.
- the tether optionally provides a link sized to tension between an internal sealing body 1393 and an external control such as push button 1392.
- stem member 1591A comprises a string.
- stem part 1395 comprises a spring 1391, which is, for example, a leaf spring or a coil spring.
- spring 1391 is integrally formed with stem part 1395. Integral formation provides the potential advantage of greater simplicity and/or lowered cost of manufacture compared to embodiments where spring and stem part are separate components.
- spring 1391 presses against a portion the stem part holding region 1397 of the shell 1345. The pressing pulls stem end 1393 up into the aperture of hole 1398 and maintains sealing.
- button 1392 is actuatable to counteract spring 1391 (or another tensioner or compressor), pushing stem end 1393 away from hole 1398. The pushing breaks the gas seal.
- stem 1394 fits one or both of holes 1397, 1399 closely, to resist solid/liquid waste leakage when the gas seal is broken.
- the clearance is, for example, 0.01-0.03 mm, 0.02-0.08 mm, 0.07-0.11 mm, 0.1-0.15 mm, a clearance in between, or a greater or lesser clearance.
- a secondary sealing element 1315 is provided in some embodiments, for example, to exclude waste from accumulating external to the stoma and/or from contact with skin.
- exclusion is by sealing as such, for example, by compression against one or more internal surfaces of an ostomy appliance.
- exclusion is by occupying volume around the stoma, such that waste material from the stoma is prevented from accumulating outside the stoma.
- secondary sealing element 1315 performs its functions without pressing on the stoma.
- secondary sealing element 1315 comprises a flexible material, for example, a thermoplastic elastomer (TPE) or a silicone rubber.
- the durometer of the material is, for example, in the range of 30-80 Shore A.
- secondary sealing element 1315 is a highly elastic material.
- Such material is, for example, silicone rubber of durometer ranging from 1-30 Shore A, 2-20 Shore A, 2-15 Shore A, 3-10 Shore A, or 3-8 Shore A.
- sealing element 1315 assists in forming a seal with stem part 1395.
- sealing element 1315 additionally or alternatively restricts the access of stomal discharge to regions of the ostomy wafer 1320 and/or shell 1345.
- the restriction potentially decreases leakage through outer seals, for example, the seal at 1325 between the ostomy wafer 1320 and ostomy appliance shell 1345.
- the restriction decreases leakage of stomal discharge to the underside of wafer 1320, which can cause tissue irritation and/or loosening of stomal wafer attachment.
- sealing element 1315 reduces the accumulation of waste inside the ostomy appliance by occupying internal volume of the ostomy appliance.
- shell 1345 comprises a flexible material such as TPE or silicone rubber.
- the flexible material has a durometer, for example, in the range of 30-80 Shore A.
- shell 1345 comprises a rigid or semi-rigid material, such as polyethylene or polypropylene.
- shell 1345 and/or secondary sealing element 1315 are sufficiently flexible for a simple method of valve manufacture. In this manufacture, stem 1394, including its expanded region, is pressed through holes 1396 and/or 1398 from the outside to assemble the valve.
- Figure 15A illustrates an exemplary valve with components disposed similarly with respect to the ostomy appliance wall 1595 as in the exemplary valve illustrated in Figures 13A-13C.
- Wall 1595 comprises the shell and/or a sealing element of an ostomy appliance, according to the embodiment.
- Button 1592 and spring 1594 are outside wall 1595.
- Stem 1591 penetrates wall 1595 through aperture 1596, and stopper 1593 and sealing region 1599A are inside the wall 1595.
- the large arrows represent directions of manual activation force.
- Small double-headed arrows represent directions of force exerted on components of the valve at the level indicated.
- stopper 1593 is on the exterior of ostomy appliance wall 1595.
- a spring 1594, 1598 or other force urges stopper 1593 to a sealing region 1599B around aperture 1596.
- spring 1594, 1598 ( Figures 15B, 15C) is disposed in the interior of ostomy appliance wall 1595 to pull stopper 1593 toward sealing region 1599B, 1599A.
- closure of sealing region 1599A, 1599B is overcome by pulling against the sealing force.
- a handle 1597 for pulling to release pressure is provided in place of button 1592.
- spring 1598 and stopper 1593 are both on the interior or both on the exterior the appliance wall 1595.
- spring 1598 is anchored to the wall 1595 and to the valve stem assembly. The anchoring is such that the spring is disposed to pull stopper 1593 to a sealing region 1599A, 1599B unless another force is applied.
- a sufficient pressure from within the device displaces stopper 1593 from its sealing position, allowing gas release.
- the sufficient pressure is selected as a safety and/or comfort release threshold.
- the sufficient pressure is, for example, 45-55 mmHg, 55-65 mmHg, 63-78 mmHg, 75-90 mmHg, 80-105 mmHg, larger, or smaller.
- manual operation of this pressure release valve is also possible, for example, by pulling on handle 1597.
- other embodiments of the invention are configured to allow gas release above a predetermined pressure threshold.
- stem assembly 1591B compresses an elastic portion of appliance wall 1595A for sealing.
- stem assembly 1591B is optionally formed with a shaft slightly too short to reach the end of an aperture 1596 it inserts into. To reach the end, force is applied to compress the appliance wall 1595A and/or elastically extend the shaft. Upon insertion, compressive forces between the ends of stem assembly 1591B and the wall 1595A create a seal, for example at 1599C. Pressing on button 1592 breaks the seal.
- sealing force is provided by an annular elastic sealing element 1520.
- the sealing element 1520 is urged by a portion of a stem assembly 1505 to press against an ostomy appliance wall 1525.
- the wall is a proximal (front) wall of an ostomy appliance, for example a portion of a cover or cap.
- the stem 1507 of stem assembly 1505 passes through wall 1525 at aperture 1528.
- the stem 1507 is anchored on an exterior surface of wall 1525 by a control member 1510 wide enough to resist passing through aperture 1528.
- wall 1525 deflects upon an inward force 1530 being applied to control member 1510.
- sealing element 1520 breaks the seal between sealing element 1520 and wall 1525 so that gas can exit the appliance through aperture 1528.
- the under-surface 1515 of control member 1510 is shaped to avoid seal formation to wall 1525 when control member 1510 is activated.
- sealing element 1520 comprises a filter element body, allowing continuous gas release even if the valve mechanism is in a closed position.
- stoppers in other embodiments of the invention are permeable to gas (for example, comprise filter material), such that opening a valve comprises changing from a relatively slow rate of gas release to a faster one.
- optional features of the ostomy appliance include filter element 1360, supported between a disc 1335 and an ostomy waste collection pouch 1350.
- disc 1335 partially houses the filter element as a housing does in some other embodiments (for example, housings 135, 335, 435).
- a region 1370 of ostomy pouch 1350 partially houses filter element 1360.
- filter element housing region 1380 of disc 1335 comprises a recess.
- filter element housing region 1380 is flat.
- material of the filter element 1360 comprises at least a portion of the aperture sealed by a valve member.
- the valve member is operable to deform a portion of the filter element to permit gas release bypassing the filter.
- Housing of a filter element comprises different aspects, alone or in combination.
- One aspect is holding the filter element in place.
- Another is sealing against the filter element by pressure and/or attachment to prevent gasses from bypassing the filter element body.
- Another is straining waste input to the filter element.
- Yet another aspect is sealing against the intrusion of solid and/or liquid to the filter element.
- ostomy appliance 1300 comprises a cover 1340 for restraining waste collection pouch 1350 and/or preventing deployment during wear.
- ostomy wafer 1320 comprises an attachment mechanism 1325, for example a flange, which shell 1345 is adapted to attach to.
- Figures 16A-16B schematically illustrate a manual gas release valve, in accordance with some exemplary embodiments of the invention.
- Figures 16C-16D schematically illustrate another manual gas release valve, in accordance with some exemplary embodiments of the invention.
- valve stem end 1629 comprises a flared, or reverse-tapered end.
- the taper extends into lumen 1627, such that a degree of sealing is controlled by the amount by which the flared region presses against the lumen wall.
- a potential advantage of flared valve stem end 1629 is that the rate of gas release is controllable by the size of the gap opened as valve member 1632 is displaced downward. Potentially, this also allows control of effluent from the valve, as the size of the gap can be modulated, for example, to allow the escape of gas, without the escape of solid or liquid material.
- a blunt-tipped valve stem end 1609 is provided.
- a valve comprising a blunt stem end 1609 is relatively insensitive to the amount of displacement it receives, potentially giving an "all or none" response to activation.
- a potential advantage of this design is a clearer indication (for example, by a release noise, and/or an odor) when pressure is sufficient to achieve valve activation.
- gas release valve member 1603, 1623 is insertable into a lumen 1607, 1627 of the body 1601, 1621 of an ostomy appliance component.
- valve member 1603, 1623 comprises one or more anchor elements 1605, 1625 insertable into receiving apertures 1608, 1628 in body 1601, 1621.
- the receiving apertures 1608, 1621 are, for example, molded or cut into body 1601, 1621.
- valve member 1603 1623 comprises a control pressure -receiving region 1613, 1633.
- control pressure-receiving region 1613, 1633 comprises an elastic region which acts as a return spring, keeping stem end 1609, 1629 normally pressed into place against an aperture of lumen 1607, 1627 to seal it.
- pressing on pressure-receiving region 1613, 1623 displaces stem 1611, 1621, releasing stem end 1609, 1629 from being pulled against an internal aperture of lumen 1607, 1627.
- valve member 1603, 1623 is formed from a single molded piece which integrates functions of anchor 1605, 1625 pressure -receiving region 1613, 1623 (including return-spring properties thereof), stem 1611, 1621, and stem end 1609, 1629.
- the molded piece is formed, for example, of polypropylene, polyethylene, or another polymer resin.
- the material surrounding body lumen 1607, 1627 comprises a material which is sufficiently flexible to stretch, allowing valve stem end 1609, 1629 to be inserted therepast, even though stem end 1609, 1629 is larger than the relaxed size of the lumen 1607, 1627.
- valve functions of anchoring, tensioning, sealing, and/or control it is a potential advantage for valve functions of anchoring, tensioning, sealing, and/or control to be integrated into a part manufacturable as a single unit, for example, for reduction of the cost and/or complexity of device manufacture.
- Figure 14A shows a gas release valve stem part 1495A with a soft sealing tip, according to some exemplary embodiments of the invention.
- Figure 14B shows a gas release valve stem part 1495B rotatable to seal or open a gas release aperture, according to some exemplary embodiments of the invention.
- valve stem part 1495A inserts into and seals a hole in a component of an ostomy appliance (appliance 1300, for example).
- valve stem part 1495A comprises a stem 1394A, with a stem end 1493 adapted to fit with a stem end cup 1496.
- stem end cup 1496 comprises a flexible material such as a thermoplastic elastomer or silicone rubber.
- stem end cup 1496 is adapted to seal against the exit of gasses through the hole in which valve stem 1494A fits.
- a potential advantage of a flexible stem end cup 1496 is to allow closer form fitting against the aperture of a hole 1398.
- a flexible stem cup 1496 can potentially seal against a hard surface; for example, an inner surface of shell 1345 in embodiments where a secondary sealing element is not used.
- button 1492A is pressed to deform elastic spring element 1491, breaking the seal made by stem end cup 1496.
- spring element 1492 has a doubled-over shape.
- at least one securing pin 1497 extending from the spring is received by a complementary hole in, for example, shell 1345. A potential advantage of securing pin 1497 is to help anchor valve stem part 1495 in position.
- stem end cup 1496 is constructed to collapse under a sufficient outward pressure from the stoma. In some embodiments, collapsing breaks the seal which cup 1496 makes with another part of the stomal appliance, allowing gas to escape outward.
- a potential advantage of this feature is to provide a safety valve for gas release which operates both automatically upon a sufficient pressure threshold being passed, and operates manually as described above. The pressure causing collapse is, for example, 47-52 mmHg, 55-65 mmHg, 60-75 mmHg, 70-85 mmHg, 80-105 mmHg, or a greater or smaller pressure.
- Exemplary ranges between a minimum and maximum pressure causing collapse are 5 mmHg, 10 mmHg, 25 mmHg, any range in between, or a greater or smaller range.
- a stemmed valve for automatic pressure release is provided separately from a manual pressure release.
- another pressure-sensitive means for automatically breaking the seal of a stemmed valve is provided.
- a stem end 1393 is sized to be pressed past a sealing portion of a sealing element 1315 under a sufficient outward pressure.
- stem 1494B of valve stem part 1495B is non-circular in cross-section, for example, lenticular.
- one or more of the holes into which stem 1494B fits has a complementary and fitting cross-section.
- release of gas is actuatable by turning stem 1494B in place. The resulting deformation of hole 1398 creates a gap which allows gas to escape.
- a lever 1492B is attached to the top of valve stem part 1495B, which projects horizontally from the shaft of stem 1494B. Pressing on the lever potentially rotates the stem shaft 1494B, opening a channel for gas release.
- FIG. 17 A schematically shows a filter element 2103 positioned to vent through the material of an ostomy pouch 2100, according to some exemplary embodiments of the invention.
- a filter element 2013 is attached to an ostomy pouch 2100, at a position selected to allow ventilation therethrough even when the pouch is folded into a collapsed configuration.
- a ventilation outlet 2105 comprises one or more slits in the pouch material, over which the filter element 2013 is sealed.
- the position is defined by one or more of the following: (1) a side of the pouch toward or away from an ostomate, (2) the choice of a particular sub-panel 2108, and/or, more particularly, choice of a pouch sub-panel 2108 in relation to the sub-panel comprising an inlet aperture to the pouch 2101, and/or (3) a particular position and/or orientation within the selected sub-panel.
- the ostomy pouch 2100 is permanently attached at inlet 2101 to the housing of another ostomy component for mounting to the stoma.
- Ostomy components to which an ostomy pouch 2100 is attachable include an ostomy cap, wafer, ostomy appliance adaptor, and/or an aperture of an ostomy device insertable to an ostomy.
- the pouch comprises an integral adaptor for separate attachment to another ostomy component.
- ostomy pouch 2100 represents a general ostomy pouch, and is comprised, in some embodiments, of a different aspect ratio, rounded as opposed to sharp corners and/or sides, a different overall outline, and/or a different folding pattern.
- An ostomy pouch holds up to about 750 ml of waste volume, or for example, up to about 250 ml, 400 ml, 500 ml, 600 ml, or another greater, smaller, or intermediate volume of waste.
- FIG. 17B schematically shows structural detail of a filter element 2103, according to some exemplary embodiments of the invention.
- a filter element 2103 comprises fixed attachment to a portion of an ostomy pouch, for example, a sub-panel 2108.
- attachment is to the inside of the pouch.
- attachment is outside, in which case the "vent" and “inlet” portions of the filter are reversed relative to the body of the element (that is, the filter inlet is at an aperture of the pouch material, and the filter outlet comprises an edge region of the filter body).
- portions of the filter element are bonded both inside and outside the pouch membrane material, across an aperture in the membrane material.
- one or more surfaces of the filter body 2102 are sealed against the entry of gas by a sealing element 2104.
- gas enters only through one or more defined inlet regions 2107.
- gas exits through one or more outlets 2105.
- the shortest distance between any given inlet 2107 and any given outlet 2105 is configured to ensure a desired level of odor clearance by the material of filter body 2102.
- the body 2102 of filter 2103 is of a construction such as felt, cloth, foam, lattice, or cake.
- the body 2102 of gas filter 2013 comprises an odor-absorbing material which filters odorants from outflowing gasses. Additionally or alternatively, the filter adsorbs odorants, catalyzes their breakdown and/or conversion, or otherwise traps them, and/or neutralizes them as an odorant.
- filtered odorants are noxious odorants, for example, fecal odors.
- odor absorption is, for example, by the use of activated charcoal, silica gel, zeolites, and/or carbide-derived carbon.
- the filter is preloaded with perfumes and/or odor neutralizing substances, for absorbing gasses passing through the filter to render them less noxious. Potentially, filtering slows the release of gasses so that external concentrations of odorants are less noticeable to the ostomate and/or to others.
- FIGS 17C-17E schematically illustrate positioning of a filter 2103 relative to folded structure of an ostomy pouch 2150, according to some exemplary embodiments of the invention.
- an ostomy pouch 2150 is folded to a package while worn, until a manual or automatic deployment for filling with waste. While worn collapsed, an ostomy pouch 2150, in some embodiments, does not fill with waste, but preserves a continent covering of a stoma. In some embodiments, passive (automatic) flatus evacuation is nevertheless performed, by means, for example, of a filter element 2103. In some embodiments, the filter element 2103 is comprised in the ostomy pouch 2150, in such a way that it functions to vent flatus even while the ostomy pouch 2150 is collapsed. In some embodiments, the structure of the pouch assists the filter venting function, for example by protecting the filter from contamination by waste, and/or controlling the rate of gas flow thereto.
- a nearly folded ostomy pouch 2150 comprises a remaining first flap 2110, and second flap 2112 (for example, a top flap and a bottom flap), foldable over a central panel region attached to a mounting element 2109 to complete the folding of the package.
- Folding to reach the configuration of Figure 17 C comprises, for example, doubling over of the pouch of Figure 17 A, followed by folding in of "wings" comprising the three panels on either side.
- a 3x6 panel has some advantages for use with an ostomy, and particularly for use as a folded ostomy bag.
- a one-panel upper protrusion potentially allows the pouch to expand while filling, to reduce the risk of blocking-up the inlet with the waste as it enters the bag.
- two full panel-size wings provide enough material to allow the pouch to assume a bulging configuration when full, and also fold neatly into position to provide a clean package profile.
- pouch shapes and folding configurations comprise embodiments of the current invention; the 3x6 panel embodiment show in these drawings is exemplary and not limiting. Not all panels are full sized in some embodiments.
- the shape of the pouch does not strictly follow the outline the shape and/or boundary orientations of the panels in some embodiments: it may be rounded on corners or sides, cut-off mid panel, or otherwise varied.
- filter element 2103 is attached to one of the walls of the material comprised in the pouch. As shown, the filter element is attached to the wall nearest to the ostomate in the pouch-deployed configuration, to the panel immediately above the mounting element-attached panel, near the bottom of that panel, but spaced from the panel fold-crease edges by, for example, 2-4 mm, 3-6 mm, 5-10 mm, or a distance in another range having the same, intermediate, larger and/or smaller bounds.
- folding flap 2110 over results in the filter being brought to the front of the package, and positioned near its top. Optionally, this is done after flap 2112 is folded over. As shown, flap 2112 is folded (optionally) up over flap 2110.
- the resulting package positions the filter close to a surface of flap 2112 which potentially occludes vent aperture 2105. In some embodiments, the risk of occlusion is reduced by the positioning of the filter 2103 (and thus vent aperture 2105) near the free end of flap 2112.
- a crimp region 2120 is formed by the folding over of region 2110.
- the crimp comprises an at least partial barrier to the intrusion of solid and/or fluid waste to the pouch compartment comprised in the panel containing the filter 2103.
- Barrier properties of some embodiments of the crimp region 2120 include, for example, that it comprises a restriction, and that it is located at the top of the pouch package, such that waste must first be pushed upward before it can descend to potentially foul the filter.
- Stomal gas in contrast, potentially is free to diffuse into the region of the filter 2103, being relatively unaffected in its movement by the direction of gravity and/or the partial restriction comprised in crimp region 2120.
- FIGS. 18A-18B show different configurations of filters 2201, 2203, 2207, 2205, 2215 attached to pouch embodiments 2202, 2204, according to some exemplary embodiments of the invention.
- An ostomy pouch in some embodiments, is folded into a packaged configuration which comprises, for example, a square, rectangular, pentagonal, hexagonal, or other polygonal shape.
- Figures 18A and 18B indicate fold lines by means of which the ostomy pouch is collapsible from its open state (shown) to a collapsed state, shaped, for example, like one of the pentagons of pouch 2202, or one of the square panels of pouch 2204.
- the package when folded, lies to one side of the inlet aperture sub-panel 2222, 2224.
- a filter element has any desired shape appropriate to the constraints of the panel within which it is placed, for example, round filter element 2201, square filter element 2203, or rectangular filter elements 2205, 2207, 2215. Constraints comprise, for example, being sized and shaped such that crease edges are avoided. Placement within the panel, in some embodiments, is such the filter outlet aperture is away from a region likely to be blocked, and/or such that the filter inlet aperture is raised up relative to potential accumulation of fluid or solid within the collapsed structure of the pouch.
- the pouch panel in which the filter 2203, 2205, 2207 is placed is chosen to be one crease away from the inlet to the pouch. This allows a potential advantage of separation of flatus from other waste material by the resistance of a crease, without increasing resistance to the point where flatus itself is blocked. Nevertheless, in some embodiments, a filter element is placed two or more creases beyond a pouch inlet (for example, filter elements 2201, 2215). This potentially increases the separating function which helps protect the filter inlet regions. Potentially, it slows the rate at which flatus escapes the filter element 2215, 2201. Potentially, this in turn improves stench control for continuous release, though it may also increase stomal pressure and/or reliance on manual venting.
- the filter flow rate is set to be, no more than 1-10 ml/min, 2-5 ml/min, 3-8 ml/min, or another range of flow rates having the same, intermediate, larger and/or smaller bounds.
- the panel in some embodiments, is above (filter 2205), below (filter 2215), and/or to the side (filter 2207) of the inlet aperture.
- a plurality of filter elements is provided, for example, both of the marked side filter elements 2207.
- FIGS. 18C-18D show filter elements 2205, 2215 having at least one side protected from waste contamination by a sealing element 2212, according to some exemplary embodiments of the invention.
- a filter element 2205, 2215 has a preferred orientation conferred by sealing of one or more sides from which waste leakage is deemed most likely to arrive (for example, since that is the direction across which lies the pouch waste inlet).
- filter element 2205 is positioned with the long side facing the pouch inlet sealed. The short sides are sealed as well, in some embodiments.
- sealing allows an outlet aperture 2210 to be positioned closer to a sealed side, without shortening the shortest available path from filter intake to filter outlet. In some embodiments, this allows more thorough (if potentially slower) filtering from a given size of filter element. In some embodiments, it allows reduction of the amount of filter material used. A potential advantage of this is cost savings, another potential advantage is reduced effect on pouch package size, and yet another potential advantage is placement of the outlet aperture nearer to the edge of the panel (in a less occluded position, for example), without increasing interference with panel creasing.
- FIGS 19A-19B show cross-sectional views of an ostomy appliance 2300 comprising a flap valve, according to some exemplary embodiments of the invention.
- a valve member 2301 is inserted to a lumen 2308 of an ostomy appliance 2300.
- a control surface 2303 is located outside the ostomy appliance.
- a valve stem 2309 passes into lumen 2308, terminating in a pressing end 2307.
- pressing end 2307 forms a seal against the wall of lumen 2308.
- Sealing comprises pressing end 2307 having an inverse taper 2306 (for example, a conical taper growing wider toward the pressing end), such that back pressure from the stoma, and/or force from a spring or other tensioning member tends to jam the tapered region more tightly against the walls of lumen 2308.
- the valve stem 2309 is advanced in the lumen, opening a gap 2320 between the lumen 2309 and the taper 2306 and/or other surface in contact with the lumen 2309.
- pressing end 2307 is configured to contact a valve flap 2305 when it is advanced forward in lumen 2308. In some embodiments, pressing downward on control surface 2303 advances pressing end 2307 to push against valve flap 2305. In Figure 19B, valve flap 2305 is shown deflected due to pressure from pressing end 2307.
- valve flap 2305 serves to prevent flow into the valve body during wear. In some embodiments, valve flap 2305 is the main or only sealing portion of the valve assembly. In some embodiments, valve flap 2305 operates together with sealing by the valve stem/pressing end 2307, 2309 against lumen 2308.
- valve flap 2305 is comprised of a flexible elastomer (for example, having a Shore A of about 40-60, 50-70, 70-90, or within another range of Shore A values having the same, intermediate, larger and/or smaller bounds).
- valve flap 2305 is configured to normally press upward against sealing surface 2310. A gap between flap 2305 and sealing surface 2310 opens when pressing member 2307 presses down on it. When released, flap 2305 is sufficiently elastic, in some embodiments, that it returns to its sealing position.
- a potential advantage of flap 2305 is to protect the main valve apparatus from contamination by waste, except when the valve is in operation to be opened. Another potential advantage is to provide a higher sealing resistance and/or sealing redundancy to the valve.
- FIGS 20A-20C show views of an ostomy appliance comprising a valve member 1623 protected from waste entering the stomal enclosure area 2001 by a secondary sealing member 2020, 2022 according to some exemplary embodiments of the invention.
- valve member 1623 crosses between the outside of ostomy component housing 1621 and the stomal enclosure.
- a sealing element 2020, 2022 occupies the space between the stoma itself and the valve member 1623.
- the sealing element 2020, 2022 is gas permeable. It is a potential advantage to provide a sealing member to absorb and/or block liquid and/or solid waste before it reaches the vicinity of valve member 2022, 2020, to avoid fouling of the valve, and/or to avoid leakage from the valve aperture across which valve member 1623 extends.
- sealing element 2020 extends all the way around the stomal enclosure.
- sealing element 2022 comprises a gap region 2022, at which a thickness is reduced in order to accommodate the intruding end of valve member 1623 and or valve flap 2305 (for example, during motion to vent) and/or to create a space around the valve member 1623 into which gas can diffuse.
- the foam is soft enough that a special venting gap is not required or used.
- sealing element 2020, 2022 is a foam element (comprised, for example, of a foamed polymer, such as a soft, polyether-based polyurethane).
- the foam in some embodiments, is permeable, such that gas can pass through it to reach the valve member 1623 for venting.
- cells of the foamed rubber are made small enough that waste particles entering the foam plug it, impeding the passage of further waste.
- Cell diameter in some embodiments is, for example, an average diameter of less than 50 ⁇ , 100 ⁇ , 200 ⁇ , 300 ⁇ , or less than another larger, smaller or intermediate size.
- An exemplary density of the foam is, for example 0.25 kg/m . In some embodiments, the density is, for example, about 0.10 kg/m 3 , 0.20 kg/m 3 , 0.15 kg/m 3 , 0.30 kg/m 3 , or another larger, smaller, or intermediate density.
- the sealing element 2020, 2022 is sized to extend across the stomal chamber (from the distal floor to the proximal end of the chamber), such that it comprises a complete closure in this direction.
- the uncompressed foam element 2020, 2022 is sized to be larger than the distal-proximal chamber dimension, such that it is compressed upon installation to ensure a seal.
- sealing element 2020, 2022 is attached on at least one side (for example to proximal wall 2011) by adhesive or welding. In some embodiments, attachment and/or positioning is achieved by supplying the proximal component with a flange which is sized to center the sealing element 2020, 2022 in position.
- Attachment of the sealing element 2020, 2022 to the stoma is a potential advantage to allow removal of a (potentially soiled) sealing element 2020, 2022 from the stomal area along with the proximal component, rather than requiring separate, potentially messy, retrieval.
- the sealing element 2022 is a partial seal, which extends sufficiently to prevent waste access to the valve member 1623, without extending fully around the stoma itself.
- the sealing element 2020, 2022 acts as a waste sink, absorbing waste that exits the stoma so that it is not free to move around inside the stomal enclosure.
- waste is excluded by the sealing element (due to hydrophobicity, and/or small cell size relative).
- the sealing element 2020, 2022 is sized to lie nearby, without putting pressure on the stomal tissue itself.
- the sealing element 2020, 2022 is spaced from the stoma so that it does not touch it.
- sealing element multiple inner and/or outer diameters of sealing element are provided, allowing an ostomate to choose a size best suited to their own stoma.
- the sealing element comprised a series of partially-attached foam rings, which an ostomate tears off to make a suitable size for their stoma.
- the sealing element 2020, 2022 is manufactured by cutting from a foam sheet, for example, by die cutting.
- the foam is cast into a desired shape.
- compositions, method or structure may include additional ingredients, steps and/or parts, but only if the additional ingredients, steps and/or parts do not materially alter the basic and novel characteristics of the claimed composition, method or structure.
- a compound or “at least one compound” may include a plurality of compounds, including mixtures thereof.
- the words “example” and “exemplary” are used herein to mean “serving as an example, instance or illustration”. Any embodiment described as an “example or “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments and/or to exclude the incorporation of features from other embodiments.
- method refers to manners, means, techniques and procedures for accomplishing a given task including, but not limited to, those manners, means, techniques and procedures either known to, or readily developed from known manners, means, techniques and procedures by practitioners of the chemical, pharmacological, biological, biochemical and medical arts.
- range format is merely for convenience and brevity and should not be construed as an inflexible limitation on the scope of the invention. Accordingly, the description of a range should be considered to have specifically disclosed all the possible subranges as well as individual numerical values within that range. For example, description of a range such as from 1 to 6 should be considered to have specifically disclosed subranges such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as individual numbers within that range, for example, 1, 2, 3, 4, 5, and 6. This applies regardless of the breadth of the range.
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Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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US14/889,991 US11291579B2 (en) | 2013-05-09 | 2014-05-08 | Gas filter and release for ostomy appliance |
JP2016512482A JP2016517764A (ja) | 2013-05-09 | 2014-05-08 | ストーマ装具用のガス濾過および解放 |
CN201480039426.6A CN105848613A (zh) | 2013-05-09 | 2014-05-08 | 用于造口术器具的气体过滤器以及释放 |
KR1020157035063A KR20160033658A (ko) | 2013-05-09 | 2014-05-08 | 개구술 기구용 가스 필터 및 배출장치 |
EP14732407.3A EP3057544B1 (en) | 2013-05-09 | 2014-05-08 | Gas filter and release for ostomy appliance |
ES14732407T ES2964603T3 (es) | 2013-05-09 | 2014-05-08 | Liberación y filtro de gas para aparato de ostomía |
BR112015028181-8A BR112015028181A2 (pt) | 2013-05-09 | 2014-05-08 | filtro e liberação de gás para aparelho de ostomia |
RU2015152526A RU2015152526A (ru) | 2013-05-09 | 2014-05-08 | Газовый фильтр и выпускной клапан прибора для стомы |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
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ILPCT/IL2013/050401 | 2013-05-09 | ||
US13/890,433 US9345612B2 (en) | 2012-05-10 | 2013-05-09 | Ostomy appliance |
US13/890,433 | 2013-05-09 | ||
PCT/IL2013/050401 WO2013168165A2 (en) | 2012-05-10 | 2013-05-09 | Ostomy appliance |
US201361884256P | 2013-09-30 | 2013-09-30 | |
US61/884,256 | 2013-09-30 | ||
US201361903523P | 2013-11-13 | 2013-11-13 | |
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PCT/IL2014/050416 WO2014181338A2 (en) | 2012-05-10 | 2014-05-08 | Compact ostomy appliance |
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PCT/IL2014/050416 WO2014181338A2 (en) | 2012-05-10 | 2014-05-08 | Compact ostomy appliance |
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US (1) | US11291579B2 (zh) |
EP (2) | EP2994079A2 (zh) |
JP (2) | JP2016517763A (zh) |
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ES (1) | ES2964603T3 (zh) |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9517157B2 (en) | 2012-05-10 | 2016-12-13 | B. Braun Medical Sas | Ostomy appliance |
USD783814S1 (en) | 2013-12-09 | 2017-04-11 | B. Braun Medical Sas | Adapter for flatus release |
USD796029S1 (en) | 2013-12-09 | 2017-08-29 | B. Braun Medical Sas | Colostomy appliance |
US9987160B2 (en) | 2009-07-14 | 2018-06-05 | B. Braun Medical Sas | Ostomy port |
US11278640B2 (en) | 2016-05-04 | 2022-03-22 | Coloplast A/S | Adhesive wafer with a neutralizer matrix |
US11291579B2 (en) | 2013-05-09 | 2022-04-05 | B. Braun Medical Sas | Gas filter and release for ostomy appliance |
US11491254B2 (en) | 2017-11-08 | 2022-11-08 | Coloplast A/S | Adhesive wafer with a neutralizer matrix |
USD1012280S1 (en) | 2018-11-30 | 2024-01-23 | B. Braun Medical Sas | Ostomy device assembly |
US11911310B2 (en) | 2017-11-08 | 2024-02-27 | Coloplast A/S | Adhesive wafer with a neutralizer matrix |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8914912B2 (en) * | 2013-02-18 | 2014-12-23 | Robert A. Stevenson | Urination relief hatch for waterproof waders and foul weather gear |
WO2015056018A1 (en) * | 2013-10-18 | 2015-04-23 | Bodychillz Limited | Cooling device |
EP4248921A3 (en) | 2015-10-14 | 2023-10-04 | ConvaTec Technologies Inc. | A medical device with an opening system |
GB201609954D0 (en) * | 2016-06-07 | 2016-07-20 | Monty Stephanie | A dressing |
CN106420146B (zh) * | 2016-08-19 | 2018-09-04 | 丽水市人民医院 | 一种可转动的造口袋及其使用方法 |
JP7066301B2 (ja) * | 2017-01-20 | 2022-05-13 | ホリスター・インコーポレイテッド | 排水性オストミーパウチ |
BR112019016468A2 (pt) | 2017-02-20 | 2020-04-07 | Coloplast As | wafer adesivo para um dispositivo de ostomia, e, aparelho de ostomia. |
US20200146944A1 (en) * | 2017-04-25 | 2020-05-14 | The Regents Of The University Of Colorado, A Body Corporate | Dressing for enteral and vesical access devices and related methods |
DK179423B1 (da) | 2017-05-31 | 2018-06-18 | Multi Lock Aps | Stomianordning |
US11986418B2 (en) * | 2017-12-22 | 2024-05-21 | Coloplast A/S | Medical system and monitor device with angular leakage detection |
US11311404B2 (en) | 2018-01-04 | 2022-04-26 | Covidien Lp | Stomal diverter device |
BR112020014059A2 (pt) * | 2018-01-19 | 2020-12-01 | Coloplast A/S | sistema para aplicar uma cobertura de estoma, cobertura de estoma, e, kit de peças. |
JP3231717U (ja) * | 2018-04-10 | 2021-04-22 | アソシエーション フォー ジ アドバンスメント オブ ティシュー エンジニアリング アンド セル ベイスト テクノロジーズ アンド セラピーズ(エイ4テック)− アソシアソンAssociation For The Advancement Of Tissue Engineering And Cell Based Technologies & Therapies (A4Tec) − Associacao | 対象者からの***を制御する医療装置、その使用及び方法 |
CN109481129B (zh) * | 2018-12-17 | 2021-01-05 | 河南省肿瘤医院 | 一种造口护理装置 |
CA3156464A1 (en) * | 2019-10-04 | 2021-04-08 | Convatec Limited | OSTOMY DEVICE |
USD957627S1 (en) * | 2020-03-19 | 2022-07-12 | Coloplast A/S | Ostomy accessory |
CN111419520B (zh) * | 2020-03-31 | 2022-02-11 | 中国人民解放军陆军特色医学中心 | 一种单手操作的便捷式造口装置 |
CN111761833B (zh) * | 2020-06-04 | 2024-07-23 | 珠海市冠浩机械设备有限公司 | 自动压棉机 |
CA3206185A1 (en) * | 2020-12-31 | 2022-07-07 | Convatec Technologies Inc. | Coupling system for ostomy appliances |
CN114224590B (zh) * | 2021-12-20 | 2024-02-27 | 振德医疗用品股份有限公司 | 一种造口凸盘及其生产方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6689111B2 (en) | 2002-03-22 | 2004-02-10 | Bristol-Myers Squibb Company | Controlled evacuation ostomy device with internal seal |
US20040181197A1 (en) | 2002-03-27 | 2004-09-16 | Cline John B. | Controlled evacuation ostomy device with external seal |
US20070191794A1 (en) | 2006-01-06 | 2007-08-16 | Bristol-Myers Squibb Company | Seal for controlled evacuation ostomy appliance |
Family Cites Families (193)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2243529A (en) | 1940-05-09 | 1941-05-27 | Grossman Abraham | Colostomy appliance |
US2341984A (en) | 1942-02-06 | 1944-02-15 | Graves Clarence David | Colostomy outfit |
US2510766A (en) | 1947-12-06 | 1950-06-06 | Carl F Surface | Colostomy control device |
US2544579A (en) | 1949-06-20 | 1951-03-06 | Frank J Ardner | Colostomy protector |
US2639710A (en) | 1951-04-24 | 1953-05-26 | Fazio Thomas | Colostomy appliance with a removable adapter device |
US2667167A (en) | 1951-11-16 | 1954-01-26 | Davol Rubber Co | Colostomy pouch |
US2971510A (en) | 1960-03-18 | 1961-02-14 | Atlantic Surgical Company Inc | Surgical drainage device |
US3447533A (en) | 1964-09-14 | 1969-06-03 | Richard J Spicer | Closure means for artificial body openings |
US3398744A (en) | 1965-06-17 | 1968-08-27 | Waldemar A Wallberg | Colostomy appliance |
US3718141A (en) | 1971-02-02 | 1973-02-27 | E Goetz | Colostomy aid |
US3976076A (en) | 1974-06-24 | 1976-08-24 | Janet Beach | Medical apparatus |
US4030500A (en) | 1974-12-16 | 1977-06-21 | Hadar Yngve Ronnquist | Fecal matter collector |
US4121589A (en) | 1975-08-06 | 1978-10-24 | Mcdonnell Roy Edward | Ostomy appliance |
GB1571986A (en) | 1976-05-12 | 1980-07-23 | Searle & Co | Ostomy appliances |
US4183357A (en) | 1976-08-02 | 1980-01-15 | Bentley Laboratories, Inc. | Chronic transcutaneous implant assembly for enterostomies |
NZ186585A (en) * | 1977-03-30 | 1981-03-16 | Kingsdown Medical Consultants | Coupling for joining pad or dressing to an ostomy bag |
US4209010A (en) | 1978-07-26 | 1980-06-24 | The Kendall Company | Artificial sphincter |
US4210131A (en) | 1978-07-26 | 1980-07-01 | The Kendall Company | Artificial sphincter with collection bag |
US4232672A (en) * | 1978-08-02 | 1980-11-11 | Kingsdown Medical Consultants Limited | Ostomy coupling including a venting valve |
US4217664A (en) | 1979-02-02 | 1980-08-19 | Faso Joseph M | Prosthesis and method for creating a stoma |
US4265244A (en) | 1979-02-07 | 1981-05-05 | Johnson & Johnson | Stoma adaptor |
US4421124A (en) | 1979-06-06 | 1983-12-20 | Lee Marshall | Pressure detection arrangement |
US4211224A (en) | 1979-06-12 | 1980-07-08 | Kubach John S | Filter venting devices for ostomy appliances |
US4233325A (en) | 1979-09-13 | 1980-11-11 | International Flavors & Fragrances Inc. | Ice cream package including compartment for heating syrup |
AU539132B2 (en) | 1979-10-30 | 1984-09-13 | Juan Voltas Baro and Hector Ortiz Hurtado | Device to obtain continence |
US4351322A (en) | 1980-10-10 | 1982-09-28 | Prager Elliot D | Stoma control device and method |
US4338937A (en) | 1980-12-05 | 1982-07-13 | Lerman Sheldon H | Mechanical continent ileostomy or colostomy |
GB2094153B (en) | 1981-03-09 | 1985-09-04 | Johnson & Johnson | Colostomy appliance and pressure relief valve therefor |
US4381765A (en) | 1981-04-02 | 1983-05-03 | Waters Instruments, Inc. | Ileostomy valve |
US4344434A (en) | 1981-06-01 | 1982-08-17 | Santa Barbara Medical Foundation Clinic | Ileostomy appliance and method for implanting the same |
US4462510A (en) * | 1981-06-30 | 1984-07-31 | Kingsdown Medical Consultants Limited | Tap for drainage bag |
US4534761A (en) | 1981-08-14 | 1985-08-13 | Bentley Laboratories, Inc. | Implant device |
US4516974A (en) | 1982-12-13 | 1985-05-14 | Imnetec Inc. | Universal vent device and method for ostomy appliances |
US4810250A (en) | 1983-07-28 | 1989-03-07 | Ellenberg William J | Ostomy apparatus |
US4642107A (en) | 1983-10-14 | 1987-02-10 | E. R. Squibb & Sons, Inc. | Adapter for use with two piece ostomy system |
US4662890A (en) | 1984-10-09 | 1987-05-05 | Waters Instruments, Inc. | Tubular medical prosthesis |
US4721508A (en) | 1984-10-09 | 1988-01-26 | Waters Instruments, Inc. | Ostomy prosthesis |
DK153122C (da) | 1985-01-15 | 1988-11-14 | Coloplast As | Lukke til engangsbrug til en kunstig eller inkontinent naturlig tarmaabning |
US4634421A (en) | 1985-07-26 | 1987-01-06 | Johnson & Johnson Products Inc. | Valve for incontinent patients |
GB8522037D0 (en) | 1985-09-05 | 1985-10-09 | Trimark R & D Ltd | Closure device |
BR8507310A (pt) | 1985-11-21 | 1987-12-01 | Futura Prod Hb | Dispositivo de fixacao para saco de drenagem de enterotomia |
US4854316A (en) | 1986-10-03 | 1989-08-08 | Davis Emsley A | Apparatus and method for repairing and preventing para-stomal hernias |
US5108430A (en) | 1987-02-20 | 1992-04-28 | Biagio Ravo | Implantable reservoir adapted to receive and store structural devices therein |
US4804375A (en) | 1987-05-06 | 1989-02-14 | Santa Barbara Medical Foundation Clinic | Ileostomy valve having a rotatable shut off |
US4834731A (en) | 1987-11-19 | 1989-05-30 | Hollister Incorporated | Ostomy appliance and convex pressure ring assembly therefor |
US4863447A (en) * | 1988-06-09 | 1989-09-05 | Smith Harry C | Valved vent assembly for a body collection pouch |
US4941869A (en) | 1988-10-17 | 1990-07-17 | Amico Ben A D | Ostomy plug-pouch |
EP0369923B1 (fr) | 1988-11-15 | 1993-09-15 | José Vidal Sans | Dipositif obturateur pour le contrôle d'iléo-colostomies |
DK2789D0 (da) | 1989-01-04 | 1989-01-04 | Bar Shalom Daniel | Lukkeindretning til tarmaabning |
US5250057A (en) | 1989-01-26 | 1993-10-05 | Chen Fusen H | Anastomotic device |
US4899399A (en) * | 1989-02-22 | 1990-02-13 | Young J Winslow | Inflatable, disposable bedpan apparatus and method |
US5026360A (en) | 1989-06-27 | 1991-06-25 | E. R. Squibb & Sons | Clamping systems for two piece ostomy device |
US5004464A (en) | 1989-08-28 | 1991-04-02 | E.R. Squibb & Sons | Convex adapter for ostomy device |
US5163897A (en) | 1989-10-25 | 1992-11-17 | Lester Persky | Incontinent prothesis and method |
DE9017505U1 (de) | 1990-05-14 | 1991-03-14 | Scheffran, Martin, 4600 Dortmund | Gerät für die Spülung und Drainierung von Wunden |
US5163930A (en) | 1990-10-03 | 1992-11-17 | E.R. Squibb | Convex insert for ostomy device |
USD323213S (en) | 1990-11-09 | 1992-01-14 | Iacone Daniel J | Connector for an ileostomy or colostomy bag |
US5261898A (en) | 1990-11-13 | 1993-11-16 | Polin Stanton G | Temporary colostomy apparatus |
US5135519A (en) | 1990-12-10 | 1992-08-04 | Helmer Bradley G | Ostomy maintenance apparatus |
US5125916A (en) | 1991-04-04 | 1992-06-30 | Ras Partnership | Stoma cap |
DK152991A (da) | 1991-08-30 | 1993-02-28 | Coloplast As | Adapter til brug sammen med stomiudstyr |
US5269774A (en) | 1992-09-25 | 1993-12-14 | Gray Michael W | Implantive ostomy ring |
USD354560S (en) | 1993-05-24 | 1995-01-17 | Chase Terrel O | Ostomy bag |
US5785677A (en) | 1993-06-22 | 1998-07-28 | Auweiler; Udo | Laparoscopy bag |
US5771590A (en) | 1993-08-02 | 1998-06-30 | Colacello; Albert A. | Manual venting and cutting apparatus for ostomy pouches |
US5372594A (en) * | 1993-08-02 | 1994-12-13 | Colacello; Albert A. | Colostomy pouche with vent valve |
US5658266A (en) | 1993-08-02 | 1997-08-19 | Colacello; Albert A. | Manual venting and cutting apparatus for ostomy pouches |
US5569216A (en) | 1993-12-02 | 1996-10-29 | Kim; Jae H. | Multipurpose colostomy device having balloons on an end thereof |
US5401264A (en) * | 1994-04-18 | 1995-03-28 | Hollister Incorporated | Ostomy pouch with internal squeeze-to-open vent valve |
US5549588A (en) | 1994-08-12 | 1996-08-27 | E. R. Squibb & Sons, Inc. | Coupling device for ostomy pouch |
WO1996032904A1 (en) | 1995-04-20 | 1996-10-24 | Sava Kranj, Industrija Gumijevih, Usnjenih In Kemic^¿Nih Izdelkov, P.O. | Prosthesis for bowel evacuation control-colostomy tube |
JPH09131365A (ja) | 1995-11-10 | 1997-05-20 | Arukea Kk | ***物用収容装具 |
US5672163A (en) * | 1996-04-26 | 1997-09-30 | Bristol-Myers Squibb Company | Ostomy pouch with intervening membrane and superabsorbent |
US6764474B2 (en) | 1996-10-22 | 2004-07-20 | Coloplast A/S | Ostomy appliance |
US5693035A (en) * | 1996-11-21 | 1997-12-02 | Hollister Incorporated | Vented ostomy pouch and self-closing valve therefor |
US5947942A (en) | 1997-07-18 | 1999-09-07 | Galjour; David M. | Colostomy bag belt |
US6050982A (en) * | 1997-11-03 | 2000-04-18 | Wheeler; Alton D. | Concealed colostomy apparatus and method |
US6485476B1 (en) * | 1998-02-25 | 2002-11-26 | Zassi Medical Evolutions, Inc. | Continent ostomy port |
US6350255B1 (en) | 1998-02-25 | 2002-02-26 | Zassi Medical Evolutions, Inc. | Pad for use with a continent ostomy port |
US6033390A (en) | 1998-02-25 | 2000-03-07 | Zassi Medical Evolutions, Inc. | Continent ostomy port |
US7087041B2 (en) * | 1998-02-25 | 2006-08-08 | Zassi Medical Evolutions, Inc. | Pad for use with continent ostomy port |
KR100352785B1 (ko) | 1998-03-10 | 2002-09-16 | 미쓰이 가가쿠 가부시키가이샤 | 에틸렌계 공중합체 조성물 및 그 용도 |
USD422357S (en) | 1998-05-04 | 2000-04-04 | Bracco Research Usa | Stopper for medication container |
DE19921555B4 (de) | 1998-05-22 | 2007-06-28 | Schwegmann, Rolf, Dipl.-Des. | Verschluß für einen künstlichen Darmausgang |
US6071268A (en) | 1998-05-29 | 2000-06-06 | Wagner; Neldon C. | Ostomy skin barrier assembly, stoma seal assembly and materials for use in stoma seals |
DK174650B1 (da) | 1999-02-25 | 2003-08-04 | Coloplast As | Stomiindretning |
GB9904527D0 (en) | 1999-02-26 | 1999-04-21 | Bristol Myers Squibb Co | Ostomy appliance |
US6543453B1 (en) | 1999-05-06 | 2003-04-08 | Sciencevision L.L.C. | Methods of refractive correction of the eye |
AUPQ090499A0 (en) | 1999-06-10 | 1999-07-01 | Peters, William S | Heart assist device and system |
US6595971B1 (en) | 1999-07-28 | 2003-07-22 | Zassi Medical Evolutions, Inc. | Ostomy irrigation system |
FR2812647B1 (fr) | 2000-08-04 | 2003-02-21 | Atofina | Film imper-respirant |
US6357445B1 (en) | 2000-09-11 | 2002-03-19 | Timothy A. Shaw | Surgical drape for colonoscopy |
NO314014B1 (no) | 2001-01-10 | 2003-01-20 | Svein Jakob Andersen | Anordning ved stomipose |
US6481589B2 (en) | 2001-02-22 | 2002-11-19 | Seaquist Closures Foreign, Inc. | Non-dispensing closure |
US6695825B2 (en) | 2001-04-25 | 2004-02-24 | Thomas James Castles | Portable ostomy management device |
DK174693B1 (da) * | 2001-06-15 | 2003-09-15 | Coloplast As | Stormiindretning |
US7083569B2 (en) | 2001-08-03 | 2006-08-01 | Zassi Medical Evolutions, Inc. | Ostomy cartridge |
DE10201840B4 (de) | 2002-01-18 | 2005-08-25 | Mars Inc. | Verpackungseinheit |
USD481456S1 (en) | 2002-01-30 | 2003-10-28 | Smithkline Beecham P.L.C. | Capsule |
DK175563B1 (da) | 2002-02-05 | 2004-12-06 | Coloplast As | Stomiindretning |
CN1292720C (zh) * | 2002-02-14 | 2007-01-03 | 宝洁公司 | 一次性***物收集器 |
DK175356B1 (da) | 2002-02-28 | 2004-09-06 | Coloplast As | Stomiindretning |
EP1343112A1 (en) | 2002-03-08 | 2003-09-10 | EndoArt S.A. | Implantable device |
US7001367B2 (en) | 2002-04-16 | 2006-02-21 | Arkinstall William W | Valved ostomy drainage device |
US6963772B2 (en) | 2002-04-17 | 2005-11-08 | The Board Of Trustees Of The Leland Stanford Junior University | User-retainable temperature and impedance monitoring methods and devices |
FR2839883B1 (fr) * | 2002-05-21 | 2005-02-25 | Braun Medical | Poche de recueil de fluides corporels munie d'un dispositif d'ouverture et de fermeture d'un canal d'evacuation |
US20030236509A1 (en) * | 2002-06-25 | 2003-12-25 | Silvestrini Edgar Ignacio | Colostomy bag with gas release valve and method for releasing gas collected in the colostomy bag |
US7147627B2 (en) | 2002-08-21 | 2006-12-12 | Hollister Incorporated | Bowel management system |
US7141071B2 (en) | 2002-12-23 | 2006-11-28 | Python Medical, Inc. | Implantable digestive tract organ |
DE20308266U1 (de) * | 2003-01-16 | 2003-08-07 | For Life Produktions- und Vertriebsgesellschaft für Heil- und Hilfsmittel mbH, 12459 Berlin | Filteranordnung |
DK176449B1 (da) | 2003-02-03 | 2008-03-03 | Tytex As | Fremgangsmåde til fremstilling af en beklædningsgenstand samt en sådan beklædningsgenstand |
DK176261B1 (da) | 2003-02-04 | 2007-05-07 | Coloplast As | Emballage til stomiindretning |
US6752754B1 (en) | 2003-02-04 | 2004-06-22 | Imagine Enterprise, Inc. | Artificial rectum and related method |
DK176425B1 (da) | 2003-03-17 | 2008-02-04 | Coloplast As | Stomiindretning |
US8016816B2 (en) | 2003-09-09 | 2011-09-13 | Convatec Technologies Inc. | Fecal management appliance and method and apparatus for introducing same |
FR2859906B1 (fr) * | 2003-09-18 | 2006-06-09 | Braun Medical | Raccord de dispositif pour stomie, et dispositif pour stomie en deux parties |
US7737321B2 (en) | 2003-09-23 | 2010-06-15 | Elliott Nyle S | colostomy alert device and method |
US7780639B2 (en) | 2003-11-12 | 2010-08-24 | Van Lue Stephen J | Magnetic devices and apparatus for medical/surgical procedures and methods for using same |
US20050208095A1 (en) * | 2003-11-20 | 2005-09-22 | Angiotech International Ag | Polymer compositions and methods for their use |
DK176235B1 (da) | 2003-12-30 | 2007-04-02 | Coloplast As | En stomipose |
DK1722731T3 (da) * | 2004-03-01 | 2009-02-16 | Coloplast As | Stomiindretning og kompakteret pose |
DK1725197T3 (da) * | 2004-03-01 | 2010-11-22 | Coloplast As | Stomiindretning |
FR2870112B1 (fr) * | 2004-05-14 | 2006-11-17 | Braun Medical Soc Par Actions | Poche de recueil pour stomie a fermeture par pli vertical |
US20060111682A1 (en) * | 2004-06-24 | 2006-05-25 | Schena Kenneth R | Colostomy bag cleaning system |
DE102005021081B4 (de) | 2004-07-23 | 2019-05-29 | Advanced Medical Balloons Gmbh | Rektal-Tubus |
ES2381647T3 (es) | 2004-07-23 | 2012-05-30 | Advanced Medical Balloons Gmbh | Dispositivo para la oclusión de una salida natural o artificial del intestino |
WO2006026995A1 (en) * | 2004-09-08 | 2006-03-16 | Coloplast A/S | Activity ostomy bag |
US7582072B2 (en) | 2004-09-09 | 2009-09-01 | Kimberly-Clark Worldwide, Inc. | Artificial stoma and method of use |
US7258661B2 (en) * | 2004-09-13 | 2007-08-21 | Bristol-Myers Squibb Company | Stoma plug |
PL1652497T6 (pl) * | 2004-10-27 | 2012-08-31 | Ostomycure As | Adapter, pokrywa i złącze do worków stomijnych |
US20060106354A1 (en) | 2004-11-17 | 2006-05-18 | Jacquelin Vantroostenberghe | Ostomy bag |
ES2449196T3 (es) | 2005-04-06 | 2014-03-18 | Boston Scientific Limited | Conjunto para soporte suburetral |
JP2006314479A (ja) | 2005-05-11 | 2006-11-24 | Shiga Dry Center:Kk | 直腸カテーテル装置 |
CN101180015B (zh) | 2005-05-20 | 2012-05-30 | 科洛普拉斯特公司 | 用于冲洗和/或***的装置 |
US7326190B2 (en) | 2005-05-25 | 2008-02-05 | Hollister Incorporated | Ostomy pouch and high performance deodorizing gas filter assembly therefor |
US7857806B2 (en) | 2005-07-14 | 2010-12-28 | Boehringer Technologies, L.P. | Pump system for negative pressure wound therapy |
WO2007030703A2 (en) * | 2005-09-09 | 2007-03-15 | Donaldson Company, Inc. | Adsorbent ostomy bag vent |
DK1774932T3 (en) | 2005-10-11 | 2015-11-02 | Convatec Technologies Inc | An ostomy coupling |
EP1954201B1 (en) | 2005-11-21 | 2010-07-28 | REBUFFAT, Carlo | Improved fragmentable device for the anastomosis of hollow organs |
US7867207B2 (en) | 2005-11-24 | 2011-01-11 | Coloplast A/S | Coupling assembly |
NZ551481A (en) * | 2005-11-30 | 2008-08-29 | Bristol Myers Squibb Co | Controlled evacuation ostomy appliance |
US8142406B2 (en) | 2005-12-07 | 2012-03-27 | Convatec Technologies Inc. | Ostomy coupling |
US7641612B1 (en) | 2006-01-17 | 2010-01-05 | Mccall Kenneth Shawn | Blood loss detection for hemodialysis system |
US7744270B2 (en) | 2006-03-10 | 2010-06-29 | Carefusion 2200, Inc. | Curable material mixing and delivery device |
SE530213C2 (sv) | 2006-04-21 | 2008-04-01 | Carponovum Ab | Anordning och sätt för anastomos |
EP2068992B1 (en) | 2006-08-03 | 2016-10-05 | Breathe Technologies, Inc. | Devices for minimally invasive respiratory support |
US8372015B2 (en) | 2006-08-28 | 2013-02-12 | Intuity Medical, Inc. | Body fluid sampling device with pivotable catalyst member |
US8926577B2 (en) | 2006-10-17 | 2015-01-06 | C. R. Bard, Inc. | Waste management system |
AU2008218675A1 (en) * | 2007-02-22 | 2008-08-28 | Convatec Technologies Inc. | Seal for a rectal or ostomy appliancce |
US20080269698A1 (en) * | 2007-04-25 | 2008-10-30 | Bristol-Myers Squibb Company | Ostomy appliance collector |
US7468056B2 (en) | 2007-05-01 | 2008-12-23 | Margaret Burt | Colostomy bag and method of use |
EP2146642B1 (en) | 2007-05-02 | 2018-09-26 | Precision Medical Devices, LLC | Non-pneumatic tourniquet device |
HUE029409T2 (en) | 2007-05-11 | 2017-02-28 | Convatec Technologies Inc | Osmotic device |
USD588693S1 (en) | 2007-06-12 | 2009-03-17 | Nordson Corporation | Liquid dispensing syringe |
JP5474779B2 (ja) | 2007-06-12 | 2014-04-16 | コンバテック・テクノロジーズ・インコーポレイテッド | オストミー用装置 |
CA131666S (en) | 2007-07-13 | 2009-10-23 | Carponovum Ab | Male anastomosis ring |
ES2392329T3 (es) | 2007-08-21 | 2012-12-07 | Ostomycure As | Implante |
US20110040269A1 (en) * | 2007-08-27 | 2011-02-17 | Convatec Technologies Inc. | Fluid filled seal for contacting the human body |
US7628767B1 (en) | 2007-09-18 | 2009-12-08 | Simmons Kathy A | Method for preventing infection and maintaining aseptic epidermal areas using a reusable non-deforming flexible protective cover |
DE102007062133B3 (de) | 2007-12-21 | 2009-07-09 | Ketek Gmbh | Vorrichtung für einen temporären Ileo-oder Urostomaverschluss |
EP2280672B1 (en) | 2008-04-22 | 2016-01-06 | ConvaTec Technologies Inc. | Temporary ostomy appliance |
CA2725783C (en) | 2008-06-19 | 2017-07-11 | Convatec Technologies Inc. | Ostomy appliances for directing effluent output |
JP5625055B2 (ja) * | 2009-07-14 | 2014-11-12 | スティマティックス ジーアイ リミテッド | 人工肛門造設術 |
WO2011138728A2 (en) | 2010-05-02 | 2011-11-10 | Stimatix Gi Ltd. | Ostomy port |
US8900116B2 (en) | 2009-07-14 | 2014-12-02 | Stimatix Gi Ltd. | Inflatable stomal implant |
US9314365B2 (en) | 2009-07-14 | 2016-04-19 | B. Braun Medical Sas | Ostomy port gas release mechanism |
KR101117069B1 (ko) | 2009-07-28 | 2012-02-22 | 조성관 | 연속식 의료폐기물 처리장치 |
WO2011031822A1 (en) * | 2009-09-11 | 2011-03-17 | Convatec Technologies Inc. | Controlled discharge ostomy appliance and shield therefor |
US9107764B2 (en) | 2009-10-01 | 2015-08-18 | Ostomycure As | Medical closure device |
WO2011057635A1 (en) * | 2009-11-10 | 2011-05-19 | Coloplast A/S | A filter - case for a coupling for an ostomy appliance |
US8690848B2 (en) | 2010-03-02 | 2014-04-08 | Ostosolutions, LLC | Closure for ostomy pouch and method thereof |
EP2568932B1 (en) | 2010-05-10 | 2015-07-29 | Coloplast A/S | Negative drawstring seal for an ostomy bag |
CN102883691B (zh) | 2010-05-10 | 2015-02-25 | 科洛普拉斯特公司 | 用于造口袋的虹膜状光阑密封件 |
EP3141224B1 (en) * | 2010-06-04 | 2019-05-22 | Coloplast A/S | Ostomy bag with filter construction |
US9517158B2 (en) | 2010-09-08 | 2016-12-13 | Hollister Incorporated | Adaptive floating flange for ostomy appliance |
US8460259B2 (en) | 2010-11-02 | 2013-06-11 | Convatec Technologies, Inc. | Controlled discharge ostomy appliance and moldable adhesive wafer |
US9545329B2 (en) * | 2011-02-21 | 2017-01-17 | International Medical Technology | Flow control and collection device |
CA2840044C (en) * | 2011-08-09 | 2019-04-09 | Hollister Incorporated | Ostomy pouch for collecting body waste |
US9833352B2 (en) * | 2011-08-23 | 2017-12-05 | Mayo Foundation For Medical Education And Research | Ostomy devices |
CN103781440B (zh) | 2011-08-29 | 2016-08-17 | 科洛普拉斯特公司 | 具有精细拉片的造口术底板 |
US8657799B2 (en) | 2011-11-07 | 2014-02-25 | Georgann M. Carrubba | Ostomy appliance and method |
RU2014149757A (ru) * | 2012-05-10 | 2016-07-10 | СТИМАТИКС Джи ЛТД. | Устройство стомы |
USD739525S1 (en) | 2012-05-30 | 2015-09-22 | B. Braun Medical Sas | Colostomy appliance |
USD739012S1 (en) | 2012-05-30 | 2015-09-15 | B. Braun Medical Sas | Capsuled colostomy bag |
USD710977S1 (en) | 2012-09-13 | 2014-08-12 | Sunrise Shower Products Co. Ltd. | Connecting ring for water spraying head |
JP6783519B2 (ja) * | 2012-11-20 | 2020-11-11 | コンバテック・テクノロジーズ・インコーポレイテッドConvatec Technologies Inc | ワンピースオストミーパウチの改良 |
GB2510398B (en) | 2013-02-01 | 2017-10-25 | Salts Healthcare Ltd | Ostomy appliance |
BR302013005473S1 (pt) | 2013-04-30 | 2014-12-23 | Ostomycure As | Configuração aplicada em dispositivo médico |
BR112015028181A2 (pt) | 2013-05-09 | 2020-10-06 | Stimatix Gi Ltd | filtro e liberação de gás para aparelho de ostomia |
USD783814S1 (en) | 2013-12-09 | 2017-04-11 | B. Braun Medical Sas | Adapter for flatus release |
USD796029S1 (en) | 2013-12-09 | 2017-08-29 | B. Braun Medical Sas | Colostomy appliance |
US10034793B2 (en) | 2014-06-16 | 2018-07-31 | Sarasota Medical Products, Inc. | Coupling systems including interlocking male and female members |
USD728759S1 (en) | 2014-07-07 | 2015-05-05 | Coflex S.A. De C.V. | Universal height absorbing toilet seal |
-
2014
- 2014-05-08 BR BR112015028181-8A patent/BR112015028181A2/pt not_active Application Discontinuation
- 2014-05-08 EP EP14732642.5A patent/EP2994079A2/en active Pending
- 2014-05-08 CN CN201480039427.0A patent/CN105828752A/zh active Pending
- 2014-05-08 WO PCT/IL2014/050417 patent/WO2014181339A2/en active Application Filing
- 2014-05-08 US US14/889,991 patent/US11291579B2/en active Active
- 2014-05-08 CN CN201480039426.6A patent/CN105848613A/zh active Pending
- 2014-05-08 JP JP2016512481A patent/JP2016517763A/ja active Pending
- 2014-05-08 JP JP2016512482A patent/JP2016517764A/ja active Pending
- 2014-05-08 WO PCT/IL2014/050416 patent/WO2014181338A2/en active Application Filing
- 2014-05-08 RU RU2015152523A patent/RU2015152523A/ru not_active Application Discontinuation
- 2014-05-08 ES ES14732407T patent/ES2964603T3/es active Active
- 2014-05-08 BR BR112015028183-4A patent/BR112015028183A2/pt not_active Application Discontinuation
- 2014-05-08 EP EP14732407.3A patent/EP3057544B1/en active Active
- 2014-05-08 RU RU2015152526A patent/RU2015152526A/ru not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6689111B2 (en) | 2002-03-22 | 2004-02-10 | Bristol-Myers Squibb Company | Controlled evacuation ostomy device with internal seal |
US20040181197A1 (en) | 2002-03-27 | 2004-09-16 | Cline John B. | Controlled evacuation ostomy device with external seal |
US20070191794A1 (en) | 2006-01-06 | 2007-08-16 | Bristol-Myers Squibb Company | Seal for controlled evacuation ostomy appliance |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US9987160B2 (en) | 2009-07-14 | 2018-06-05 | B. Braun Medical Sas | Ostomy port |
US10537461B2 (en) | 2009-07-14 | 2020-01-21 | B. Braun Medical Sas | Disposable ostomy assemblies |
US9883964B2 (en) | 2012-05-10 | 2018-02-06 | B. Braun Medical Sas | Ostomy appliance |
US9517157B2 (en) | 2012-05-10 | 2016-12-13 | B. Braun Medical Sas | Ostomy appliance |
US10524953B2 (en) | 2012-05-10 | 2020-01-07 | B. Braun Medical Sas | Compact ostomy appliance |
US11291579B2 (en) | 2013-05-09 | 2022-04-05 | B. Braun Medical Sas | Gas filter and release for ostomy appliance |
USD796029S1 (en) | 2013-12-09 | 2017-08-29 | B. Braun Medical Sas | Colostomy appliance |
USD783814S1 (en) | 2013-12-09 | 2017-04-11 | B. Braun Medical Sas | Adapter for flatus release |
US11278640B2 (en) | 2016-05-04 | 2022-03-22 | Coloplast A/S | Adhesive wafer with a neutralizer matrix |
US11491254B2 (en) | 2017-11-08 | 2022-11-08 | Coloplast A/S | Adhesive wafer with a neutralizer matrix |
US11786631B2 (en) | 2017-11-08 | 2023-10-17 | Coloplast A/S | Ostomy appliance having a neutralizing layer deposited on adhesive of a wafer and located inside a waste collection bag |
US11911310B2 (en) | 2017-11-08 | 2024-02-27 | Coloplast A/S | Adhesive wafer with a neutralizer matrix |
USD1012280S1 (en) | 2018-11-30 | 2024-01-23 | B. Braun Medical Sas | Ostomy device assembly |
Also Published As
Publication number | Publication date |
---|---|
WO2014181339A3 (en) | 2015-02-26 |
EP2994079A2 (en) | 2016-03-16 |
WO2014181338A3 (en) | 2015-02-26 |
JP2016517763A (ja) | 2016-06-20 |
JP2016517764A (ja) | 2016-06-20 |
US20160166424A1 (en) | 2016-06-16 |
BR112015028183A2 (pt) | 2020-06-30 |
EP3057544B1 (en) | 2023-11-08 |
CN105828752A (zh) | 2016-08-03 |
EP3057544A2 (en) | 2016-08-24 |
CN105848613A (zh) | 2016-08-10 |
BR112015028181A2 (pt) | 2020-10-06 |
WO2014181338A2 (en) | 2014-11-13 |
RU2015152523A (ru) | 2017-06-15 |
US11291579B2 (en) | 2022-04-05 |
RU2015152526A (ru) | 2017-06-15 |
ES2964603T3 (es) | 2024-04-08 |
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